CN102830470A - Pluggable optical transceiver and manufacturing method therefor - Google Patents

Pluggable optical transceiver and manufacturing method therefor Download PDF

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Publication number
CN102830470A
CN102830470A CN2012103135514A CN201210313551A CN102830470A CN 102830470 A CN102830470 A CN 102830470A CN 2012103135514 A CN2012103135514 A CN 2012103135514A CN 201210313551 A CN201210313551 A CN 201210313551A CN 102830470 A CN102830470 A CN 102830470A
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China
Prior art keywords
optical
plug
housing
optical transceiver
internal
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CN2012103135514A
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Chinese (zh)
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CN102830470B (en
Inventor
冲和重
小町广一
和田隆寿
石井邦幸
仓岛宏实
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Priority claimed from JP2010083610A external-priority patent/JP5445278B2/en
Priority claimed from JP2010105557A external-priority patent/JP5471787B2/en
Priority claimed from JP2010105560A external-priority patent/JP5471788B2/en
Priority claimed from JP2010114311A external-priority patent/JP5471813B2/en
Priority claimed from JP2010213701A external-priority patent/JP5736703B2/en
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Publication of CN102830470A publication Critical patent/CN102830470A/en
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Publication of CN102830470B publication Critical patent/CN102830470B/en
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Abstract

The present invention discloses a pluggable optical transceiver which comprises an optical socket for accommodating an external connector, and a mechanism which prevents the optical transceiver from separating from a main system when the optical socket accommodates the external connector and prevents the optical transceiver from accommodating the external connector when the optical transceiver separates from the main system.

Description

Pluggable optical transceiver and manufacturing approach thereof
The application be submitted on October 29th, 2010, denomination of invention for " pluggable optical transceiver and manufacturing approach thereof ", application number is the dividing an application of application for a patent for invention of 201080045196.6 (international application no is PCT/JP2010/069765).
Technical field
The present invention relates to have the pluggable optical transceiver of at least a function in light transmission and the light-receiving; Specifically; The present invention relates to following optical transceiver, it can send a plurality of light signals that have the specific wavelength that differs from one another respectively and receive a plurality of light signals that have the specific wavelength that differs from one another respectively.
Background technology
U.S. Pat P5,943,461B discloses a kind of optical transceiver, and this optical transceiver is provided with the optical conenctor that the optical plug terminal with being installed in external fiber links to each other.Optical fiber is drawn to be connected with optical module (following represent with OSA) from optical conenctor; Said optical module is equipped with semiconductor devices, such as the semiconductor laser diode that is used for transmitter OSA (TOSA) (LD) or be used for the semiconductor photo diode (PD) of receiver OSA (ROSA).
The transmission speed of optical communication increases, and transmission speed has surpassed 10Gbps at present, is generally 40Gbps and 100Gbps.Only rely on the semiconductor devices among the OSA to be difficult to arrive so high speed.Generally use the intelligence system of Wave division multiplexing (WDM).For example, four signalling channels of wavelength multiplexing, the speed of each signalling channel are 10Gbps and have the specific wavelength that differs from one another that this is equivalent to the transmission speed of 40Gbps, so in simple optical fiber, transmit multiplexed light signal.In speed is in the system of 100Gbps, and multiplexed speed is 4 signalling channels of 25Gbps or 10 signalling channels that multiplexed speed is 10Gbps, is the transmission speed of equal value of 100Gbps with realization speed.The CFP-MSA-Draft-rev-1.0 agreement has been stipulated the standard of 100Gbps transmission.
The optical transceiver that satisfies the WDM standard is equipped with a plurality of TOSA and ROSA, optical multiplexer and optical demultiplexer.Another optical unit that the another kind of optical transceiver of WDM communication is equipped with optical unit that a plurality of TOSA and optical multiplexer are integrated and a plurality of ROSA and optical demultiplexer are integrated is so that limit or the quantity of the internal optical fiber that reduces to be connected with optical element.Yet this integrated optical device has following shortcoming: as a TOSA only or when only a ROSA breaks down, need to change whole element.Particularly, because the TOSA and the ROSA that move in being difficult to obtain between this high velocity, perhaps the specification of TOSA and ROSA has limited allowance usually, therefore can often run into the situation of changing deterioration OSA.
For independent installation the optical transceiver of TOSA and ROSA is arranged, the internal optical fiber that is connected with each element disperses.In addition, optical fiber has following inherent characteristic, and loss increases during fibre-optical bending.The minimum bending radius of conventional fiber is defined as 15mm.Even improved optical fiber, its minimum bending radius also is defined as 5mm.Thereby internal optical fiber must prepare unnecessary length, this means that under situation about internal optical fiber not being connected up, long optical fiber can be arranged in the optical transceiver disorderly.
Summary of the invention
The optical communication apparatus that is used for the WDM communication system that relates in one aspect to of the present invention.This device comprises a plurality of optical elements, electrical equipment, many internal optical fibers and housing.Optical element comprises optical plug, a plurality of OSA and optical unit.OSA can be TOSA or ROSA,
And optical unit can be optical multiplexer or optical demultiplexer according to the type of OSA.Optical multiplexer can the multiplexing a plurality of light signals that send and have the specific wavelength that differs from one another respectively from each TOSA.Optical demultiplexer can resolve into the light signal that the outside provides a plurality of light signals that have the specific wavelength that differs from one another respectively, and the light signal after will decomposing is sent to corresponding ROSA.Electrical equipment comprise be installed on the circuit board and with TOSA with
The circuit that ROSA is electrically connected.Internal optical fiber can be connected with optical multiplexer optical plug with optical demultiplexer optics, and optical multiplexer is connected with TOSA and optical demultiplexer is connected with ROSA.In the housing optical element, electrical equipment and internal optical fiber can be installed.
One according to communicator of the present invention is characterised in that, housing is divided into two parts, and a part only is used to install optical element, and another part only is used to install electrical equipment, and internal optical fiber can be connected with optical element with the form that can insert.
Because housing is divided into two parts significantly, so internal optical fiber can extend to the below of an optical element in the part and the below of the circuit board in another part.Optical element can also comprise many internal optical fibers, front tray and lock unit.Each internal connector is arranged on the end of internal optical fiber or is associated with the end of internal optical fiber, and is connected with OSA with the form that can insert.Front tray can support internal connector and be furnished with internal optical fiber.Lock unit can support OSA and can be connected with internal connector two kinds of positions.
Front tray can be provided with a plurality of slits.Each slit can be admitted an internal optical fiber, and is provided with a pair of lock pawl that engages with internal optical fiber.Slit can also be provided with and prevent the internal optical fiber in the slit eaves portion that departs from and the guiding piece that is positioned at the sidepiece place of slit, so that the internal optical fiber that extends along the sidepiece of front tray is from vertically turning to laterally.
Communicator of the present invention can also be provided with the back pallet of the circuit board below of another part that is arranged in housing.Back pallet also can be with the internal optical fiber that pulls out from a part this part that leads once more.Back pallet can also be provided with a plurality of eaves portion, and a plurality of eaves portion prevents to place the internal optical fiber of back pallet to depart from.
A part of the housing of this communicator can be provided with a plurality of portions that are used to install optical element; Wherein platform portion can be formed with a plurality of grooves that are used to place internal optical fiber, and another part of housing can also be provided with a plurality of the portions that periphery can limit the bending curvature of internal optical fiber.Platform portion in another part can with the circuit contacts that is installed on the circuit board, to guarantee from the heat dissipation path of circuit to housing.
In the platform portion of a part, can be provided with two pairs of grooves; Distance between the first pair of groove and place between two optical fiber of SC type optical plug distance about equally, and another distance between the second pair of groove and place between two optical fiber of LC type optical plug distance about equally.Therefore, when the optical plug of this optical communication apparatus was the SC type, the internal optical fiber that pulls out from optical plug can place first pair of groove, and when LC type optical plug is installed, can make second pair of groove admit the internal optical fiber that pulls out from optical plug.
The housing of this optical communication apparatus can be provided with the zone that is used to install optical plug.Rear wall and sidewall can with should the zone and a part separate.Between the rear portion of optical plug and rear wall, be equipped with under the situation of conducting strip, can optical plug be installed in this zone, thereby can effectively protect a part and another part not to receive external action.
Another aspect of the present invention relates to the method for assembling optical communication apparatus.This optical communication apparatus comprises optical element, electrical equipment, many internal optical fibers and housing.Optical element comprises optical plug, optical unit and a plurality of OSA, and electrical equipment comprises the electronic circuit that is installed on the circuit board.Internal optical fiber is connected an OSA among the OSA respectively with optical unit, and housing only is equipped with these optical elements in a part, and electrical equipment only is installed in being different from another part of this part, and internal optical fiber is installed.Method of the present invention is further comprising the steps of: (a) optical unit is installed on the said housing; (b) arrange the internal optical fiber that extends from optical unit; (c) will be installed in the circuit board that OSA fits together on the housing, to cover internal optical fiber; And (d) OSA is connected with internal optical fiber optics.
One of this method is characterised in that, can after internal optical fiber being arranged in the housing and being installed in OSA in the housing, internal optical fiber is connected with OSA optics.The step of arranging internal optical fiber can may further comprise the steps: (b-1) internal optical fiber is placed the groove of a part that is formed on housing, this part only is used to install optical element; And (b-2) make internal optical fiber crooked along the periphery that is formed on the platform portion in another part of housing, wherein, this another part only is used to install electrical equipment.In addition, the step of mounting circuit boards can also comprise: (c-1) cover with circuit board and place groove and along the crooked internal optical fiber of periphery.
In modified example, arrange that the step of internal optical fiber can may further comprise the steps: (b-1) ' will the back pallet place another part of housing; The curvature bending that and (b-2) ' internal optical fiber is limited according to the back pallet; And the step of mounting circuit boards can may further comprise the steps: circuit board is installed on the pallet of back, places the internal optical fiber on the pallet of back with covering.
In the method for the invention; The step of arranging internal optical fiber can may further comprise the steps: (b-1) cover internal optical fiber with front tray and lock unit; In a part that internal optical fiber is installed in housing, (b-2) optical fiber in the direct internal optical fiber in one of slit on front tray; And the step of mounting circuit boards can may further comprise the steps: the internal connector that (c-1) will be attached on the end of internal optical fiber is connected with front tray; (c-2) internal connector is placed on retracted position; (c-3) lock unit is installed in the part of housing, and (c-4) general is installed on the lock unit with the OSA that circuit board group is fitted together in advance; And OSA and internal optical fiber step of connecting can be comprised the step that internal connector is placed on link position.
Another aspect of the present invention relates to a kind of optical transceiver, and this optical transceiver comprises OSA; One end is provided with the internal optical fiber of lock pin, elastomeric element and flange; The pallet of direct internal optical fiber; And internal connector.The internal connector of this optical transceiver is admitted an end of internal optical fiber, and fits together elastomeric element is remained on internal connector inside with stop part, and internal connector engages with OSA by tray support and through lock unit movably.This optical transceiver is characterised in that internal connector can move between retracted position and link position.At link position, lock pin can be connected with OSA optics, and in retracted position, internal connector is not interfered the installation of the lock unit that fits together in advance with OSA.
Internal connector of the present invention can be provided with groove, and groove is admitted the lock pawl of pallet, and its further groove can be provided with the teat that limits retracted position and link position.In an example, groove can be provided with two teats, and retracted position can be limited between the end wall of dark side-prominent and said groove, and link position can be limited between two teats.In another example, when groove was provided with three teats, retracted position can be limited between the end wall of the darkest teat and said groove, and link position can be limited between two more shallow teats.
The partition wall that internal connector of the present invention can be provided with the first that admits internal optical fiber, the second portion of admitting elastomeric element and flange and separate first and second portion.Elastomeric element can place between partition wall and the flange, therefore, said lock pin is outwards promoted from said stop part.
Another aspect of the present invention relates to optical transceiver, and this optical transceiver comprises housing, conducting strip and resinous optical plug.Optical plug can comprise the sleeve assembly of drawing internal optical fiber with the arrangement of tap.Housing is provided with the zone that is used to install optical plug.This zone can be centered on by sidewall and rear wall.Conducting strip can place between optical plug and the rear wall.
Sleeve assembly can also comprise the flange between first cylindrical shell, second cylindrical shell and first cylindrical shell and second cylindrical shell.Internal optical fiber is drawn from second cylindrical shell with the arrangement of tap.First cylindrical shell passes conducting strip and stretches in the cavity of optical plug.Optical plug can be provided with conducting strip is pressed against the rear wall on the rear wall of housing, and the stage portion of the rear wall of this optical plug is admitted the flange of sleeve assembly.Housing further is provided with cover, this cover optical plug is pressed against on the rear wall of housing and conducting strip between the rear wall of optical plug and housing.
Optical plug is characterised in that each side of optical plug can be provided with lug, and the sidewall of housing can be provided with the recess of admitting lug.One end of lug is attached to the sidepiece of socket, and crooked vertically from attachment.Bend can flexibly rotate around attachment, thereby can conducting strip further be pressed against on the rear wall of housing.The lug of the both sides of optical plug can be formed obliquely, and the recess on each sidewall also can be formed obliquely.Lug can be provided with rib, can be through near the wall of recess rib being flattened.Conducting strip can be a supatex fabric, or can be processed by the rubber that is coated with the conductive material that contacts with the rear wall of housing.
The rear wall of housing can be provided with paired two incision.In pairs the pitch between two optical axises of the pitch of pair of notches and SC connector equates in the otch, and the pitch between two optical axises of another pitch of another paired otch and Lucent Connector equates.Optical plug of the present invention can be applied to SC type optical conenctor and LC type optical conenctor.
The rear wall of optical plug can be provided with a plurality of protuberances.Protuberance can be near conducting strip, thereby conducting strip can contact with the rear wall of housing reliably.Protuberance can be arranged on the whole outer surface of optical plug.When the housing of this optical transceiver comprised that upper shell and lower house and optical plug place between upper shell and the lower house, the protuberance on the outside surface of Socket casing can contact with lower house with upper shell, thereby can be effectively and shielded from light transceiver reliably.
In addition, optical transceiver of the present invention can be provided with the shielding gasket that places between upper shell and the lower house, and particularly, shielding gasket can be arranged on the sidewall and rear wall that is formed in the lower house, and the zone of optical plug is installed with encirclement.Shielding gasket not only can contact with lower house with upper shell, and contacts with conducting strip between the rear portion of rear wall and optical plug, thereby can be more effectively and shielded from light transceiver reliably.
According to optical transceiver of the present invention on the other hand, optical transceiver comprises a plurality of OSA, circuit board, plug-board and housing.Circuit board is equipped with the electronic circuit that is connected with OSA.Plug-board is provided with the plug that cooperates with main connector.Connector is electrically connected with circuit with the electric connector between the circuit board is next through placing plug-board.Optical transceiver of the present invention is characterised in that plug-board is supported by housing rigidly, and circuit board is supported by housing flexibly.Housing can comprise upper shell and lower house, and wherein plug-board is arranged between upper shell and the lower house, and circuit board also is arranged between upper shell and the lower house, but across liner.
On two surfaces of front and back of said plug-board, can be provided with rib, admit the rib in the plug-board and upper shell and lower house are provided with groove.Can between rib and groove, insert crown cap, the shape of this crown cap and the shape-consistent of rib.Crown cap can be provided with a plurality of shanks and a plurality of fin that all contacts and push this wall with the wall of groove.Thereby plug-board can be supported by upper shell and lower house rigidly.
On the other hand, the sidepiece of the front and back of circuit board can be provided with grounding pattern.Liner can contact with grounding pattern.The grounding pattern that is formed on same sidepiece place of the front and back of circuit board can couple together via the conductive pattern at hole or covering board edge, thereby can shield the circuit that is installed on the circuit board effectively.The sidepiece of upper shell and lower house can be provided with the groove of admitting each liner.In modified example, liner can be the U-shaped metal parts with flat part and a pair of shank.Flat part can wrap up board edge, and shank can be provided with the fin that contacts with lower house with upper shell.Even liner has above-mentioned arrangement, circuit board also can place between upper shell and the lower house flexibly, and makes upper shell and lower house with the liner circuit on the screened circuit plate effectively.
Another aspect of the present invention relates to pluggable optical transceiver, and this pluggable optical transceiver and main system are pegged graft, and have following obvious characteristic; When the optical plug of optical transceiver is admitted aerial lug; Can prevent that optical transceiver from separating with main system, and except above functions peculiar, can also be when optical transceiver and main system disengaging; Promptly when optical transceiver is not pegged graft with main system, prevent optical transceiver admittance aerial lug of the present invention.
Optical transceiver of the present invention comprises the optical plug of admitting aerial lug; The screw rod that optical transceiver engages with main system is locked; Bolt with above-mentioned function; With the housing that is used to install optical plug, screw rod lock and bolt.That is to say that when optical plug was vacant, an end of bolt can stretch in the optical plug, and the screw rod lock can be provided with the groove of the other end of admitting bolt.
At the original position of optical transceiver, i.e. the position of optical transceiver and main system disengaging, the other end of screw rod lock pushing bolt, correspondingly, the other end of bolt can stretch in the optical plug, thus, prevents optical plug admittance external optical connector.When through screw rod lock being fixed to main connector when optical transceiver is engaged with main system, the groove alignment that the other end of bolt can be locked with screw rod, thus the generation redundant space is admitted the other end of bolt.Aerial lug is inserted in the optical plug, thereby aerial lug can push an end of bolt, and can the other end of bolt be placed the groove of screw rod lock.Thereby only when aerial lug and main system grafting, aerial lug can engage with optical plug.In addition,, therefore can utilize bolt, prevent that the screw rod lock from removing from main system, can prevent that optical transceiver from separating with main system as stop part because the other end of bolt is received within the groove of screw rod lock.
Bolt can be provided with elastic, and housing can be provided with the space of admitting elastic.Under the resilient force that the operation by the elastic in the space causes, bolt can automatically restore to original position.In addition, optical plug can be provided with otch, and an end of bolt passes otch.Bolt can stretch in the optical plug through otch.
Another aspect of the present invention relates to the coupling assembling that places in the pluggable optical transceiver.Coupling assembling can comprise lock unit, internal optical fiber and connector shell.Lock unit supports OSA, and comprises a pair of lock pawl.The end of internal optical fiber has lock pin, flange and volute spring, and helical spring end is near flange.Connector shell can comprise first space, second space and the middle part separator of separating said first space and said second space.Helical spring the other end is near the middle part separator, and the end of internal optical fiber is admitted in first space.The continuous internal optical fiber of second fixed in space and said end.Coupling assembling of the present invention is characterised in that first space of connector shell engages with the lock pawl of lock unit, so that internal optical fiber is connected with OSA optics.First space of connector shell can be provided with a pair of side chain that is all supported by the middle part separator.Side chain can have the U-shaped section, and in this U-shaped section, can fix reliably and engage has the lock of lock unit pawl.
Coupling assembling of the present invention can also be provided with the lock pin stop part that is supported by connector shell, so that lock pin, flange and volute spring are placed between lock pin stop part and the middle part separator.Thereby, can prevent that internal optical fiber from separating with connector shell.The a pair of shank that the lock pin stop part can be provided with beam and extend from beam, thus the U-shaped section formed.Beam can have the opening that is passed by lock pin, and the flange of the root of lock pin can abut against on the beam.Shank can be provided with the lug that locks together with connector shell.Therefore, can prevent that lock pin, flange and volute spring from separating with connector shell.
Description of drawings
Through describing the preferred embodiment of the present invention in detail below with reference to accompanying drawing, with understanding above-mentioned better and other purpose, aspect and advantage.
Figure 1A and Figure 1B show the optical transceiver according to the embodiment of the invention, and wherein Figure 1A shows the observed optical transceiver from the front upper place, and Figure 1B shows the observed optical transceiver from the back lower place;
Fig. 2 is the exploded view of optical transceiver;
Fig. 3 shows the main system that optical transceiver shown in Figure 1 will be installed;
Fig. 4 A shows the inside of first housing, and Fig. 4 B shows the inside of second housing;
Fig. 5 A illustrates the inner front portion of optical transceiver with amplifying, and Fig. 5 B is the cut-open view of this part;
Fig. 6 A shows another housing that the back pallet is installed, and Fig. 6 B shows the back pallet that is placed with internal optical fiber;
Fig. 7 A is the skeleton view that circuit board 18 and plug-board 19 are shown, and Fig. 7 B shows the circuit board 18 that has no element, and Fig. 7 C shows the cut-open view of the side edge part of circuit board, and Fig. 7 D shows plug-board 19;
Fig. 8 A is the horizontal cross of optical transceiver, shows circuit board and is placed on the liner between the housing, and Fig. 8 B illustrates the sidepiece of the circuit board shown in Fig. 8 A with amplifying, and Fig. 8 C shows the modification grounding pattern that is arranged on the circuit board;
Fig. 9 A illustrates the skeleton view that is placed on two another kind of liners between the housing, and Fig. 9 B is the horizontal cross that the sidepiece of the modification liner shown in circuit board and Fig. 9 A is shown;
Figure 10 A shows crown cap, and Figure 10 B shows the modification crown cap, and Figure 10 C illustrates crown cap, is arranged in the groove of first housing and second housing and the cut-open view of the rib on the plug-board;
The internal optical fiber that Figure 11 A shows optical multiplexer and extends from this optical multiplexer, and Figure 11 B shows the sleeve assembly that is placed in the optical plug;
Figure 12 is the skeleton view that illustrates according to the front tray of the embodiment of the invention;
Figure 13 A illustrates the skeleton view of front tray according to another embodiment of the present invention, and Figure 13 B shows the front portion of the optical transceiver that the front tray shown in Figure 13 A is installed, and wherein internal optical fiber is arranged in each slit of front tray;
Figure 14 is the skeleton view that the internal connector that links to each other with lock unit is shown;
Figure 15 A shows the observed internal connector from the rear, and Figure 15 B shows the observed internal connector from the place ahead;
Figure 16 A is the exploded view of internal connector according to another embodiment of the present invention; Figure 16 B shows the internal connector shown in Figure 16 A that fits together; Figure 16 C shows connector body, and Figure 16 D is the cut-open view that the internal connector shown in Figure 16 B that engages with the lock pawl of front tray is shown;
Figure 17 is the skeleton view that another kind of internal connector is shown;
Figure 18 A shows the lock unit according to the embodiment of the invention, and Figure 18 B shows lock unit according to another embodiment of the present invention;
Figure 19 A is the side view of OSA, and Figure 19 B is the rear view of a slit of lock unit;
Figure 20 is along the cut-open view that is placed on the optical axis intercepting of the internal optical fiber in the internal connector;
Figure 21 A illustrates the skeleton view of the front portion of first housing according to another embodiment of the present invention, and Figure 21 B is the front elevation of the front portion of first housing according to another embodiment of the present invention;
Figure 22 A shows the observed optical plug according to the embodiment of the invention from the rear, and Figure 22 B shows the observed optical plug from the place ahead, and Figure 22 C shows the exploded view of optical plug;
Figure 23 shows optical plug is installed in the step in the central region of first housing;
Figure 24 shows the cover that is mounted to housing;
Figure 25 shows optical plug according to another embodiment of the present invention, and wherein the optical plug shown in Figure 25 has LC type structure;
Figure 26 A and Figure 26 B show the optical plug according to further embodiment of this invention;
Figure 27 shows the screw rod lock according to the embodiment of the invention;
Figure 28 explained the screw rod lock that is used for placing shown in Figure 27 housing structure is set;
Figure 29 is the skeleton view that illustrates according to the bolt of the embodiment of the invention;
Figure 30 A is the cut-open view of optical plug bolt and screw rod lock when separating with aerial lug; Figure 30 B is the front elevation of optical plug bolt and screw rod lock when separating with aerial lug; And the cut-open view of Figure 30 C bolt and screw rod lock when to be optical plug admit aerial lug, and Figure 30 D is the optical plug front elevation that bolt and screw rod are locked when admitting aerial lug;
Figure 31 A to Figure 31 D shows the step of laying internal optical fiber;
Figure 32 shows internal optical fiber is placed on the step in the front tray;
Figure 33 A shows internal connector and is in the step can be with position that OSA is connected the time, and the step that Figure 33 B shows internal connector when being in another position of not interfering OSA; And
Figure 34 shows OSA and circuit board and plug-board two boards is installed in the step on the housing.
Embodiment
Below, be described with reference to the drawings according to preferred embodiments more of the present invention.In the description of accompanying drawing, represent identical parts with identical reference marker and label, and repeat no more.
First embodiment
Figure 1A and Figure 1B are the skeleton views according to the optical transceiver 1 of the embodiment of the invention, and wherein Figure 1A shows the observed optical transceiver 1 from the front upper place, and Figure 1B shows the observed optical transceiver 1 from the back lower place.In the following description; The front side is corresponding with a side that is provided with optical plug 14; Rear side is corresponding with the side that plug 19b is installed; Top or top side are corresponding with the side that the first housing 10a is installed with respect to the second housing 10b, and below or bottom side are corresponding with the side of the installation second housing 10b.Fig. 3 shows the main system that optical transceiver 1 will be installed.Main system 2 typically is provided with system board 2a, and main connector 3a and pair of guide rails 3b are installed on the system board 2a.In mainboard 2a, be provided with the panel 2b of ported 2c.Optical transceiver 1 of the present invention can be pegged graft with main connector 3a through inserting among the port 2c.
Optical transceiver 1 illustrated in figures 1 and 2 is provided with and is of a size of 128 * 72 * 14mm 3Housing 10, this size is confirmed by the multi-source agreement (multi-source agreement) relevant with so-called CFP transceiver.The housing 10 of present embodiment is made of metal.
Optical transceiver 1 is provided with the cover 12 that is positioned at housing 10 front ends.Optical plug 14 is contained in the middle part of cover 12 by set screws.Housing 10 also is provided with a pair of screw rod lock 16 that is positioned at cover 12 two ends.The front end of screw rod lock 16 is provided with the knob 16a that extends from cover 12, and the rear end of screw rod lock 16 is formed with screw thread 16b.This screw thread 16b tightens together with the threaded hole at the place, both sides that is arranged on the electric connector 3a that places main system 2, thereby, optical transceiver 1 is fixed on the main system 2.
The both sides of housing 10 also are provided with rib 10c.Rib 10c is provided with the space 10g that is passed by screw rod lock 16.Rib 10c has along being arranged on the function of the guide rail 3b direct light transceiver 1 on the main system 2, is installed on the main system 2 thereby be convenient to optical transceiver 1, and is convenient to plug 19b and engages with the electric connector 3a of main system.Plug 19b according to present embodiment is provided with electrical pads, and in the beam overall 72mm of optical transceiver 1, the quantity of electrical pads surpasses 140, thereby the pitch between the electrical pads is less than 1mm.Therefore, engage with electric connector 3a, preferably or inevitably use like aligning guides such as rib 10c and guide rail 3b in order to make plug 19b.
Fig. 2 is the exploded view of the optical transceiver 1 shown in Figure 1A and Figure 1B.Fig. 2 shows the optical transceiver 1 that the past beneath arrives.Housing 10 comprises upper shell 10a that is called as first housing and the lower house 10b that is called as second housing.In the space that forms by two housing 10a and 10b, a plurality of optical elements and electrical equipment are installed.Optical transceiver 1 comprises optical plug 14, optical multiplexer 20, optical demultiplexer 22, front tray 24, two groups of internal connectors 26 and 28,4 ROSA of lock unit 30,4 TOSA 32, circuit board 18 and plug-boards 19.Below, each element is roughly described.
Fig. 4 A shows the inner structure of the first housing 10a, and Fig. 4 B shows the inside of the second housing 10b.
With reference to figure 4A, the inside of the first housing 10a is divided into R 1To R 5Five parts.Be positioned at the R of first of the front end of the first housing 10a 1Be used to install optical plug 14 and two optical elements that are positioned at optical plug 14 both sides, i.e. optical multiplexer 20 and optical demultiplexer 22.Be right after the R of first 1Second portion R 2Be used to install front tray 24.Be right after second portion R 2Third part R 3Be used to install internal connector 26 and lock unit 28.Be right after third part R 3The 4th part R 4Be used to install the circuit board 18 that is used for electronic circuit, and the 5th part R 5Be used to install the plug-board 19 that is used for plug 19b.ROSA 30 and TOSA 32 place third part R 3The rear end.
In this optical transceiver 1, the 4th part R only 4Be used to install electronic component, and other part R 1To R 3Be used to install optical element.Rear end 10f with the first housing 10a protects plug-board 19 as top board.Thereby the optical transceiver 1 of present embodiment is distinguished part that optical element is installed and the part that electronic component is installed significantly.In addition, utilize internal connector 26 and lock unit 28 realize OSA 30 and 32 with internal optical fiber between optics be connected, and need not to use any fibre-optical splice.
With reference to figure 4A, the set inside of the first housing 10a has a plurality of labyrinths.The R of first 1The middle part be provided with the regional 11a that is used to install optical plug 14.The both sides of central region 11a are set to be used to install optical multiplexer 20 and optical demultiplexer 22.Two optical elements 20 and 22 through screw retention in separately zone.
Second portion R 2Be set to be used to install front tray 24.Second portion R 2Than first R 1Thick, thus the platform 11b of portion formed.The 11b of platform portion is provided with a plurality of groove G 2, and be formed with six groove G in the present embodiment 2, at these grooves G 2In guiding and the settle internal optical fiber be used for optical plug 14 and optical multiplexer 20 and optical demultiplexer 22 are linked together, the optical fiber that is used for the optical fiber that optical multiplexer 20 and TOSA 32 are linked together and is used for optical demultiplexer 22 and ROSA 30 are linked together.
Front tray 24 is fixed among the center pit 11c on the 11b of platform portion through screw is screwed into.The both sides of the 11b of platform portion are provided with the screw hole that the second housing 10b is fixed to the first housing 10a.
Internal connector 26 is installed in third part R 3The front end that is formed with the 11d of platform portion.The 11d of this is provided with the second portion R with the place ahead 2In groove G 2Six groove G that link to each other 4 Front tray 24 is installed in rotine positioning separately with internal connector 26, and these parts 24 and 26 shelter from and are fixed on groove G 2And G 4In internal optical fiber, this can prevent that internal optical fiber from departing from groove G 2And G 4
Third part R 3Rear side lock unit 28 is installed.Third part R 3In 11d of platform portion and third part R 3In the 11e of platform portion mutually continuous.In addition, be positioned at third part R 3The groove G of front side 4Also with third part R 3Groove G 6Link to each other.Yet, make groove G through two grooves in the outside are merged into a groove 6Quantity reduce to 4.Third part R 3The rear end be provided with a plurality of saddle 11f that are used to install OSA 30 and 32, the shape of saddle 11f is corresponding with the profile of the bar portion of OSA 30 and 32. OSA 30 and 32 can be installed on these saddles 11f, makes heat radiator be placed between bar portion and the saddle 11f and the flange of OSA 30 and 32 is placed on the lock unit 28.Then, lock unit 28 is fixed to the first housing 10a, so that OSA 30 and 32 aims at the first housing 10a with screw.
The 4th part R 4Also be provided with the 11g of another and with the groove G in the place ahead 6Consecutive groove G 8Be placed in groove G 8In internal optical fiber at the 4th part R 4Inside turn, and the corresponding object component of guiding.Thereby the 11g of platform portion has the plane of bending shape that limits internal optical fiber curvature.The 11g of this with circuit board 18 on the relative position of IC (for example being used for driving driving circuit and the clock data recovery circuit in the receiving element of the luminescent device of transmitting element) be provided with a plurality of pairs of platform portions.Among the element on the circuit board 18, the power that above-mentioned these IC consume is big.The heat that these IC produce diffuses to the first housing 10a effectively through two platform 11g of portion and 11h.Two platform 11h of portion can directly contact with IC or through heat radiator and IC indirect contact.
Fig. 4 B is the inside and the skeleton view that is mounted to the liner 34a of the second housing 10b that illustrates according to the embodiment of the invention second housing 10b.The second housing 10b comprises the Q of first 1To third part Q 3And the regional 11n that is used to install optical plug 14.The Q of first 1The R of first with the first housing 10a 1Correspondence, second portion Q 2Second portion R with the first housing 10a 2With third part R 3Correspondence, and third part Q 3The 4th part R with the first housing 10a 4Corresponding.
Liner 34a is along the Q of first 1To third part Q 3Two sides, the Q of first 1The rear end of front end and central region 11n extend.Shown in Fig. 4 B, the second housing 11b is provided with a plurality of lug boss 11m in liner 34a extends the path of being followed.During assembling optical transceiver 1, lug boss 11m is fixed-bearing 34a temporarily.The second housing 10b can be provided with thin-walled rather than lug boss 11m along the inboard of sidewall 11o.Thin-walled can prevent that also liner from scattering during assembling optical transceiver 1.
Optical plug 14 is admitted external optical connector (not shown in Fig. 1 to Fig. 4), and the optical device in external fiber in the aerial lug and the optical transceiver 1 is coupled together, to carry out full duplex and optical WDM communication.With reference to figure 2, optical plug 14 comprises housing 14a, sleeve retainer 14b, conducting strip 14c and two sleeve 20c and 22c.Optical plug 14 places the central space 11a of the front portion that is formed by two housing 10a and 10b.
The middle part of panel 12 is provided with optical port 12a.With screw panel 12 is fixed to the antetheca 10d of first housing 10, this makes two cavitys of optical plug 14 expose from optical port 12a.Optical plug 14 not only is arranged between two housing 10a and the 10b, and sleeve rack 14b, conducting strip 14c and sleeve 20c and 22c are arranged between panel 12 and the rear wall 11j together, and rear wall 11j is positioned at the rear side of central space 11a.Socket casing 14a is provided with two cavitys, and a pair of lock pawl of sleeve 20c and 22c and sleeve retainer 14b stretches in these two cavitys.In the present embodiment, the physical size of lock pawl and sleeve 20c and 22c meets the specification of so-called SC connector.Internal optical fiber stretches out from the end of sleeve 20c and 22c with the mode that tap is arranged.Particularly, tap (pig-tailed) optical fiber is extracted out from sleeve via U-shaped on the rear wall that is formed at the space or semi-circular cut-out.Conducting strip 14c is placed between the flange of rear wall 11j and sleeve 20c, overflows in optical transceiver 1 to prevent electromagnetic radiation.
Optical multiplexer 20 and optical demultiplexer 22 are installed in the both sides of optical plug 14.20 pairs of optical multiplexers send and 4 road light signals that have the specific wavelength that differs from one another respectively carry out multiplexed from each TOSA 32.And the light signal that optical demultiplexer 22 provides external fiber is divided into 4 road light signals that have the wavelength that differs from one another respectively, and these light signals are offered each ROSA 30.
Two internal optical fibers extracting out from each sleeve 20c and 22c during being laid in housing 10 after, from the rear side of optical multiplexer 20 and optical demultiplexer 22 gets into optical multiplexer 20 and optical demultiplexer 22.These two internal optical fibers also are the tap structure with being connected of optical multiplexer 20 and signalling separation vessel 22.Described in hereinafter, be provided with four internal optical fibers that optical multiplexer 20 and four TOSA 32 are linked together and with optical demultiplexer 22 and four other four internal optical fibers that ROSA 30 links together according to the optical transceiver 1 of present embodiment.Thereby 8 internal optical fibers are under the guiding of front tray 24, in the housing 10 that is laid in altogether.
Front tray 24 can guide to TOSA 32 with four internal optical fibers of drawing from optical multiplexer 20, and will guide to ROSA 30 from other four internal optical fibers that optical demultiplexer 22 is drawn.Optical transceiver 1 links together a plurality of optical element opticals in the housing 10.Therefore, internal optical fiber need process unnecessary length, so that improve the throughput rate of optical transceiver 1.Front tray 24 in the housing 10 can be arranged the internal optical fiber of lengthening in an orderly manner.In addition, the first housing 10a can utilize the die cast metal method to process, and has enough thickness and be formed for the groove at inner guiding fiber.Internal optical fiber through making lengthening passes the internal optical fiber that front tray 24 is arranged lengthening in groove, can improve the throughput rate of optical transceiver 1, especially can shorten built-up time, and reduces to damage the possibility of internal optical fiber.
Rear side at front tray 24 is provided with two groups of internal connectors 26.One group of internal connector 26 engages with the internal optical fiber that causes ROSA 30 from optical demultiplexer 22, and another group internal connector 26 engages with the internal optical fiber that causes TOSA 32 from optical multiplexer 20.The quantity of the quantity of internal connector and ROSA 30 and TOSA 32 is corresponding, and be can separate in case respectively with corresponding ROSA 30 and TOSA 32 cooperations.Internal connector 26 can be operated separately.
Of subsequent section in the instructions, during assembling optical transceiver 1, the unnecessary length of internal optical fiber is placed front tray 24 and is formed on the groove on the housing 10, and internal connector 26 is temporarily cooperated with the finger of front tray 24.ROSA 30 and TOSA 32 are installed on the housing 10a with lock unit 28, make lock unit 28 mutually opposed with internal connector 26.Then; Internal connector 26 is slided backward so that make internal connector 26 and corresponding lock unit 28 lockings; Thereby the internal optical fiber of drawing from optical multiplexer 20 can be connected with TOSA 32, and can be connected with ROSA 30 from other internal optical fiber that optical demultiplexer 22 is drawn.Thereby, can realize by the bindiny mechanism of internal connector 26 and lock unit 28 OSA 30 and 32 with external fiber between optics be connected.Therefore, even when breaking down for one among the OSA 30 and 32 only, also can only remove from lock unit 28 and replace fault OSA easily and apace through only internal connector 26 that will be corresponding with the fault optical module.
The optical transceiver 1 of present embodiment is equipped with circuit board 18 and plug-board 19 at the rear of OSA 30 and 32.On two surfaces of circuit board 18 a plurality of electrical equipments are installed, the rear end of plug-board 19 is equipped with plug 19b.
Electronic component comprises a plurality of IC that heat dissipation is big, for example is used for driving the driver of transmitting element LD and the clock data recovery circuit in the receiving element.In order to protect thermally conductive pathways not receive the influence of these IC, a plurality of portions with these IC thermo-contacts are set on the inner surface of the first housing 10a.Housing 10a and 10b are provided with the thick metal shell that is formed by casting die, and this thick metal shell has big thermal capacity and can be formed with table top.In addition, the depression between the table top can play the effect at inner direct internal optical fiber.
The plug-board 19 that is arranged at the rear of circuit board 18 is equipped with plug 19b.This optical transceiver 1 can have the light transmission speed of 40Gbps or 100Gbps when communicating by letter with main system with other 4 passages that are used for receiving element with 4 passages that are used for transmitting element.So, need each passage to send electric signal with the speed of 10Gbps or 25Gbps.The electric signal of this high speed is handled according to LVDS (low-voltage differential signal) standard usually.In other words, need each signalling channel to have a pair of signal pins, so need 16 pins to come transmission of electric signals altogether.In addition, the transmission of high speed signal must increase ground connection (GND) line.Usually signal wire is placed between a pair of GND line, to ensure signal quality.In addition, because optical transceiver 1 is equipped with 4 passages that are used to send and other 4 passages that are used to receive, so the power consumption of entire circuit becomes relatively large, and needs a plurality of power pins.
Therefore, this optical transceiver 1 is provided with has the plug 19b that surpasses 140 pins in the overall with of 72mm, thereby the pin pitch of connector 19b is decreased to the distance less than 1mm inevitably, and requires circuit board 18 to have high dimensional accuracy.When the high plug of this dimensional accuracy of configuration on big substrate, can make become cost height and efficient of circuit board 18 low.The circuit board separated into two parts of this optical transceiver 1, part 18 area are big and circuit is installed, and another part 19 is being provided with plug 19b in the less area relatively.
Below, description is installed in each optical element and the modification of electrical equipment in the optical transceiver 1.
Refer again to Fig. 2, Fig. 4 A and Fig. 4 B, the optical transceiver 1 of present embodiment can be provided with two liner 34a and 34b, and liner has the rod shape and processed by elastomeric element, and elastomeric element is generally the proofed sleeve of the band coat of metal.
Shown in Fig. 4 B, with the R of first 1Corresponding part Q 1In, liner 34a extends on the wall of sidewall and the regional 11n that is defined for installation optical plug 14.With second portion R 2With third part R 3Corresponding part Q 2In, liner 34a extends on the sidewall of the second housing 10b.With the 4th part R 4Corresponding part Q 3In, liner 34a is placed on the groove 10o that places top side wall, and extends along the grounding pattern of circuit board 18.Another liner 34b is positioned among the groove 10h of the first housing 10a, and extends along another grounding pattern in the back side that is arranged on circuit board 18.
When the first housing 10a and the second housing 10b are fitted together, make at the R of first 1To third part R 3In, the first liner 34a is placed between housing 10a and the 10b, and at the 4th part R 4In, liner 34a is placed between the lip-deep grounding pattern of the second housing 10b and circuit board 18, and another liner 34b is placed between another grounding pattern on the back side of the first housing 10a and circuit board 18.This arrangement of two liner 34a and 34b and housing 10a and 10b can so that the circuit on the circuit board 18 not only with the outside of optical transceiver 1 and also with the regional 11a electric shield that optical plug 14 is installed.
Fig. 5 A and Fig. 5 B illustrate the front portion of optical transceiver with amplifying, and wherein Fig. 5 A is a planimetric map and Fig. 5 B is a cut-open view.When the second housing 10b and the first housing 10a were fitted together, liner 34a was maintained between two housing 10a and the 10b.With reference to figure 5A, liner 34a can extend on the sidewall 11i of the first housing 10a and rear wall 11j, with around central region 11a.In addition, shown in Fig. 5 B, liner 34a can contact with conducting strip 14c between the rear wall 11j with being placed on optical plug 14, thus shielding space 11a reliably.
To further describe circuit board 18.Fig. 7 A is the skeleton view that circuit board 18 and plug-board 19 are shown, and Fig. 7 B shows the circuit board 18 that does not have any element, and Fig. 7 C shows the cut-open view of the side edge part of circuit board, and Fig. 7 D shows plug-board 19.As stated, according to the plate separated into two parts that is used for electronic component of the optical transceiver 1 of present embodiment, part is a circuit board 18 and another part is a plug-board.Two boards 18 and 19 is linked together by the edge web member.
Circuit board 18 is equipped with a plurality of electrical equipments.ROSA 30 links to each other with a surface of circuit board 18 via FPC (flexible print wiring) the plate 18d of correspondence, and TOSA 32 also links to each other with another surface of circuit board 18 via the FPC plate 18d of correspondence.This arrangement that receiving element and transmitting element is separated by means of above-mentioned surface can reduce two electricity between the unit and crosstalk.Clock and data recovery IC 18r is arranged near the side the ROSA30 on the front surface of circuit board 18, and driver IC (not shown in Fig. 6 A) is arranged near the side the TOSA 32 but goes up overleaf.The layout of CDR IC 18r and the layout of driver IC make the optical transceiver 1 of present embodiment can reach the transmission speed of 40Gbps or 100Gbps.
Fig. 6 A illustrates the skeleton view of the first housing 110a according to another embodiment of the present invention, and Fig. 6 B is the skeleton view that the first housing 110a of whole optical elements has been installed in inside.Shown in Fig. 6 A, the 4th part R of the first housing 110a 4Saved groove G 8, and alternatively, at the 4th part R 4Be provided with two 111g of platform portion.111g of platform portion be formed on the saddle 111f that is positioned at sender side near, and the 111g of another is formed on receiver-side and is positioned at part R 4The middle part.These two 111g of platform portion are provided with the zone that is used to arrange heat radiator 18t, and this regional position is corresponding to the position that is installed in the driver IC on the circuit board 18.The 111g of platform portion form be installed in circuit board 18 on two platform 111h of portion of contacting of CDR IC.
The 4th part R 4In form the plane that is used to install back pallet 136 around other zone of the 111g of platform portion.At the 4th part R 4In, back pallet 136 can direct internal optical fiber F 2To F 8Back pallet 136 comprises mainboard 136a, fastening part 136b and a plurality of eaves 136c of portion.Mainboard 136a has and the 4th part R 4In the roughly the same shape of shape of open section.Fastening part 136b be provided with the 111g of platform portion in the hole aimed at of threaded hole.Back pallet 136 can be by screw retention on the first housing 110a.The 136c of eaves portion can retrain internal optical fiber F 2To F 8Particularly, the 136c of each eaves portion lifts from outer rim and the inner edge of mainboard 136a, and curves inwardly.The sweep of the 136c of eaves portion can cover internal optical fiber F 2To F 8Thereby,, can prevent internal optical fiber F 2To F 8Scatter.The surface of the 136c of eaves portion can directly contact with circuit board 18 or contact indirectly through heating radiator, thereby guarantees from another thermally conductive pathways of circuit board 18 to first housing 110a.
Shown in Fig. 7 B, an end of circuit board 18 is provided with edge connector 18p, and wherein edge connector comprises a plurality of electrical pads.Circuit board 18 also is provided with marginal portion 18f and along a pair of grounding pattern 18e of each edge 18f.Although not shown among Fig. 7 B, the back side of circuit board 18 with positive 18a on the corresponding position of grounding pattern 18e also be provided with grounding pattern 18e, and shown in Fig. 7 C, these grounding patterns 18e links to each other through hole 18v.Grounding pattern 18e on the positive 18a of circuit board 18 electrically contacts through the liner 34a and the second housing 10b, and the grounding pattern 18e on the back side contacts with the first housing 10a through liner 34b.Thereby, be installed in electronic component on the circuit board 18 and be grounded housing and center on.
Fig. 8 A is the horizontal cross of optical transceiver 1, and Fig. 8 B illustrates the marginal portion of optical transceiver 1 with amplifying.
The edge 18f of circuit board 18 is placed between the first housing 10a and the second housing 10b by each liner 34a and 34b.Because liner 34a and 34b are processed by elastomeric element; Therefore circuit board 18 can receive the resiliency supported of housing 10a and 10b; This can reduce by being connected (that is being welded to connect between the solder joint of edge connector 18p and the socket pin 19g) caused stress between circuit board 18 and the plug-board 19.
Because liner 34a and 34b can be processed by conductive material, and contact with the grounding pattern 18e of circuit board 18, thereby realize the framework ground connection of circuit board 18, i.e. chassics earth.
Fig. 8 C is the cut-open view that variant embodiment of the present invention is shown, and wherein Fig. 8 C illustrates the marginal portion 18f of circuit board 18 with also amplifying.Embodiment shown in Fig. 8 C is provided with the grounding pattern 18w that forms the edge 18f parcel of circuit board 18.When needs were installed circuit to high-density on circuit board 18, circuit board 18 was difficult to be provided with a plurality of grounded circuits that the front and the back side with circuit board 18 couple together sometimes.In this case, the grounding pattern 18w with the edge of circuit board 18 parcel can provide chassics earth through contacting with the second housing 10b with the first housing 10a with 34b via conductive gasket 34a.
Fig. 9 A shows the variant embodiment according to liner 134 of the present invention, and Fig. 9 B illustrates the section of the marginal portion of the circuit board of realizing with the modification liner shown in Fig. 9 A 134 18 with amplifying.Liner 134 is for having the U-shaped shape of flat part 134a and two shank 134b and 134c.The U-shaped section of liner 134 can wrap up the marginal portion 18f of circuit board 18.In addition, shank all has a plurality of fin 134d and 134e, wherein the fin and the first housing 10a and the second housing 10b Elastic Contact.Fig. 9 A and the liner 134 shown in Fig. 9 B can play the effect identical with liner 34.
With reference to figure 7D, plug-board 19 is provided with socket 19c and plug section 19f.Socket 19c comprises a plurality of pin 19g, and admits the edge connector 18p of circuit board 18.Pin 19g can be soldered to the solder joint of edge connector 18p, and is electrically connected to each connector solder joint 19b in the plug section 19f.Therefore, when the solder joint 19b of plug section 19f when connector 3a on the main system 2 cooperates, the circuit on the circuit board 18 can be electrically connected with main system 2.
Plug-board 19 can also comprise teat 19d and rib 19e.Teat 19d is formed on the side of plug section 19f, and rib 19e is formed on two surfaces of socket 19c.Refer again to Fig. 2, optical transceiver 1 can be provided with crown cap 35 and the groove 10v that is arranged in the first housing 10a, and the shape of parcel rib 19e can processed and had to said crown cap 35 by sheet metal.The groove 10v of housing 10a admits rib 19e with crown cap 35.Similarly, the second housing 10b can be provided with another groove 11v, and the rib 19e on the back side of plug-board 19 admits with crown cap 35.Crown cap 35 can with housing 10a and 10b Elastic Contact.
In the layout around the plug-board 19, teat 19d can be near the rear wall 10e of the first housing 10a, so that when optical transceiver 1 cooperates with the electric connector 3a of main system 2, make circuit board 18 and plug-board 19 location.In addition, because the rib 19e on the plug-board 19 places in groove 10v and the 11v, can prevent that therefore backlash takes place plug-board 19 when from electric connector 3a, extracting connector 19b out.The layout of rib 19e and teat 19d can protect plug-board 19 not receive the influence of mechanical stress.
With further describing the details of crown cap 35 with the mechanism of treating to fit together with plug-board 19.Figure 10 A shows the crown cap 35 according to the embodiment of the invention.Thereby crown cap 35 has the section that the U-shaped section meets plug-board 19 center rib 19e.Particularly, crown cap 35 comprises flat part 35a, a plurality ofly has than the main shank 35b of length and width degree and have narrower width and than the outwardly directed more auxiliary shank 35d of main shank 35b.Main shank 35b forms in place, the two edges bending of flat part 35a, and auxiliary shank 35d only forms in edge's bending of flat part 35a.Two shank 35b and 35d are alternately arranged with each other.Also be provided with a plurality of fin 35c among the flat part 35a of crown cap 35.
Shown in Fig. 4 A and Fig. 4 B, the rear end of the first housing 10a and the second housing 10b is respectively arranged with groove 10v and the 11v that is used to place crown cap 35.Figure 10 C is the cut-open view that rib 19e, crown cap 35 and groove 10v and 11v are shown.The crown cap 35 that two lip-deep rib 19e of plug-board 19 can be had the U-shaped section covers, and crown cap 35 is placed in the respective slot 10v and 11v of housing 10a and 10b.Auxiliary shank 35d contacts with diapire with the rear wall of groove 10v and 11v with fin 35c.
Figure 10 B shows crown cap 135 according to another embodiment of the present invention.The crown cap 135 of present embodiment also has the U-shaped section with the form fit of rib 19b.The sheet metal 135 of present embodiment also is provided with lug 135e except main shank 135b with the auxiliary shank 135d.Lug 135e extends towards the direction opposite with the bearing of trend of auxiliary shank 135d.The lug 135e of present embodiment makes the direction of crown cap be easy to difference.
In another variant embodiment, groove 10v and 11v can have two kinds of degree of depth that are alternately arranged with each other.Darker part can be admitted fin 35c, that is to say, the end of the fin 35c of crown cap 35 does not contact with the bottom of groove 10v and 11v.In this embodiment, crown cap 35 does not receive along the influence of the elastic force of the depth direction of groove 10v and 11v.
Auxiliary shank 35d and rib 19e can prevent reliably that crown cap 35 from sliding in groove 10v and 11v; Thereby; Even when optical transceiver 1 being arranged on the main system 2 or when main system 2 is dismantled, also can edge protection edge connector 18p and socket pin 19g be not damaged.On the other hand, the first housing 10a and the second housing 10b carry out resiliency supported to circuit board 18.
Below, the internal optical fiber F that describes optical multiplexer 20, optical demultiplexer 22 and stretch out from optical multiplexer 20 and optical demultiplexer 22 2To F 8Although illustrating, Figure 11 A has internal optical fiber F 2And F 6The skeleton view of optical multiplexer 20, but with arrange shown in Figure 11 A that identical layout also is applicable to optical demultiplexer 22 and internal optical fiber F 4And F 8
In the rear end of optical multiplexer 20, draw two internal optical fiber F that lead to TOSA 32 from a side of optical multiplexer 20 6, and draw three internal optical fiber F from opposite side 6And F 2These internal optical fibers F 2And F 6Has the tap structure.During assembling optical transceiver 1, will have five internal optical fiber F 2And F 6Optical multiplexer 20 be installed on the first housing 10a.Because therefore the length of fiber of having confirmed the position of optical element in advance and having confirmed optical element is coupled together adjusts internal optical fiber F in advance 2To F 6Length separately is to be suitable for installation.The optical transceiver 1 of the embodiment of the invention is equipped with internal connector with internal optical fiber F 6Couple together with TOSA32, and need not to use any fused fiber splice joint.Fusion splice need prepare the optical fiber of unnecessary length usually, and need this unnecessary length of optical fiber be encapsulated in the housing in an orderly manner.As stated, this optical transceiver uses internal connector 26, and need not to be provided with the internal optical fiber F of any unnecessary length 2And F 6
Shown in Figure 11 B, sleeve assembly can be made of metal and begin to comprise the first cylindrical shell 20c, flange 20e and the second cylindrical shell 20f from its front portion.Second cylindrical shell is admitted the internal optical fiber F from optical multiplexer 20 or optical demultiplexer 22 2And F 4Sleeve assembly can be connected to the internal optical fiber F that is fixed in the second cylindrical shell 20f with the external fiber that inserts first cylindrical shell 2And F 4So,, can external fiber be connected with TOSA 32 optics.
Below, be installed in according to the front tray 24 on the optical transceiver 1 of the embodiment of the invention, internal connector 26 and lock unit 28 further describing.
Figure 12 is the skeleton view that the front tray 24 of the embodiment of the invention is shown.As stated, front tray 24 is provided with and is used to guide the internal optical fiber F that optical multiplexer 20 and TOSA 32 are linked together 64 slit 24a and be used to guide the internal optical fiber F that optical demultiplexer 22 is linked to each other with ROSA 30 8Other 4 slit 24a.Slit 24a has identical pitch at rear side.The layout of pitch and OSA 30 and 32 about equally, but slit 24a is along with near optical plug 14 and gradually towards middle bent.
The rear end of each slit 24a is provided with a pair of lock pawl 24b.Lock pawl 24b can engage with internal connector 26.To preceding constriction gradually, and slit 24a has stop part 24c and the 24d of eaves portion to the width of slit 24a in the front side from the back, to prevent to be placed on the optical fiber F among each slit 24a 6And F 8Scatter.A sidepiece of front tray 24 is provided with guide space 24e and wall 24g, and guide space 24e is led to the 4th part R 4Internal optical fiber F 8Pass, wall 24g is used to be provided with internal optical fiber F 8Curvature, and the other side of front tray 24 is provided with another guide space 24f and wall 24h, this guide space 24f is led to the 4th part R 4Internal optical fiber F 6Pass, this wall 24h is used for restricted internal optical fiber F 6Curvature.Can make screw pass mider hole 24r and engage this front tray 24 is fixed on the first housing 10a with the threaded hole 11c shown in Fig. 4 A.
Figure 13 A illustrates the skeleton view of front tray 124 according to another embodiment of the present invention, and Figure 13 B is illustrated in to be placed with internal optical fiber F in each slit 6And F 8The planimetric map of front tray 124.
Front tray 124 comprises anterior 124A and rear portion 124B.The rear portion is provided with threaded hole 124r and a plurality of slit 124a, and slit 124a has a pair of lock pawl 124b and the 124d of eaves portion that is used to prevent that internal optical fiber from scattering.Each side of rear portion 124B also is provided with top board 124s and guiding wall 124t and 124u, and top board 124s and guiding wall 124t and 124u are configured for following internal optical fiber F 6And F 8Guide slit 124w, these internal optical fibers F 6And F 8Along the edge of the first housing 10a by drawing longitudinally to towards laterally.
Anterior 124A can direct internal optical fiber F 6And F 8, and be provided with antetheca 124v and the preceding eaves 124x of portion.Antetheca 124v horizontal expansion is to prevent internal optical fiber F 6And F 8Outstanding forward, and the preceding eaves 124x of portion extends back to cover the front portion of pallet 124 from antetheca 124v. Structure 124v and 124x can prevent internal optical fiber F 6And F 8Scatter from anterior 124A.Before the top board 124s at the 124x of eaves portion and sidepiece place can be with along the sidepiece drawing of front tray 124 and towards the internal optical fiber F of transverse curvature 6And F 8Cover.
Figure 14 shows the intermediate module that internal connector 26, lock unit 28 and OSA 30 form.Below, the details of description internal connector 26.Shown in Figure 15 A and Figure 15 B, the rear side of internal connector 26 and front side are respectively arranged with two space 26a and 26b.These two space 26a and 26b are separated by middle wall 26c.Rear space 26a admits and is attached at internal optical fiber F shown in Figure 11 A 6The coil component 20a at an end place.On each side pawl 26s of rear space 26a, also be provided with opening 26d, this opening 26d engages with the teat 28c of lock unit 28.Side pawl 26s has the U-shaped section, and wherein the lock pawl 28b (will be described in more detail below) of lock unit is placed in the U-shaped.Because teat 28c engages with opening 26d's, internal connector 26 can engage with lock unit 28.When engaging, internal optical fiber F 6Lock pin 20b on the top is inserted in the hole of sleeve 30d of ROSA 30, and this can make internal optical fiber F 6Be connected with the semiconductor optical device optics among the ROSA 30.
Be placed on coil component 20a among the rear space 26a near middle wall 26c; So that when internal connector 26 engages with lock unit 28, promote lock pin 20b, thereby realize that the physics between the end of the suspension column that the end of lock pin 20b is interior with being fixed on sleeve 30d contacts towards ROSA 30.Thereby the optical transceiver 1 of present embodiment can be provided with through physics contact (PC) and realize internal optical fiber F 6Be connected with the optics between the ROSA 30, and need not between optical fiber, to carry out any welding.In addition, even when breaking down for one in OSA 30 and 32, can only change the OSA of deterioration simply, and can not influence all the other OSA.
The anterior sidewall of internal connector 26 is provided with the groove 26e that is formed with two teat 26f and 26g.Groove 26e admits the lock pawl 24b of front tray 24.Internal connector 26 can slide along fore-and-aft direction along lock pawl 24b.When the teat that is arranged on lock pawl 24b edge portion place engages with the first teat 26g at the dark side place that is arranged on groove 26e; Promptly; When the teat of lock pawl 24b is placed in the recess between the end wall that is formed at dark side-prominent 26g and groove 26e, internal connector 26 temporarily is arranged to away from lock unit 28 through internal connector 26 being pushed to front tray 24 sides.As final execution internal optical fiber F 6When optics between OSA 30 or 32 is connected, the teat of lock pawl 24b is slided in groove 26e and engages with the second teat 26f.
The stop part 127 that Figure 16 A to Figure 16 D has described internal connector 126 according to another embodiment of the present invention and combined with internal connector 126; Wherein Figure 16 A is an exploded view; Figure 16 B shows the connector that assembles; Figure 16 C is the skeleton view of internal connector, and Figure 16 D is the cut-open view that the position relation between the lock pawl 24b of internal connector, stop part, internal optical fiber and front tray 24 is shown.
Be arranged on internal optical fiber F 6And F 8The lock pin 20b of end have flange 20d.And the continuous coil component 20a of lock pin 20b is placed between the middle part separator 126c and said flange 20d of internal connector 126.Be similar to the internal connector 26 shown in Figure 15 A and Figure 15 B, internal connector 126 is provided with two space 126a and 126b, and space 126a is located between two side pawl 126s and the diapire, and space 126b is formed by another housing section 126t.The stop part of being processed by sheet metal 127 comprises beam 127a and a pair of shank 127b that all extends from beam 127a, so stop part 127 has the U-shaped section.Beam 127a is provided with the opening 127d that is run through by lock pin 20b, and the diameter of this opening 127d is less than the diameter of flange 20d.The end of shank 127b is provided with lug 127c, and this lug 127c engages with hook portion 126q on the middle wall 126c top that is formed on internal connector 126.
Internal optical fiber F 6And F 8Be placed in the internal connector 126, so that at internal optical fiber F 6And F 8Be positioned under the situation of front space 126b; Lock pin 20b passes the opening 127d of the beam 127a of stop part 127; And stop part 127 is engaged with internal connector 126, so that under the situation of coil component 20a near middle part separator 126c, lug 127c engages with hook portion 126q.Because the diameter of flange 20d is greater than the diameter of opening 127d, so stop part 127 can prevent that lock pin 20b from moving backward.Therefore, can prevent internal optical fiber F 6, F 8Split with lock pin 20d and internal connector 126.
The internal connector 126 of present embodiment also is provided with the groove 126e that is positioned at housing 126t sidepiece place.Groove 126e comprises two recess 126m and 126n and three teat 126f to 126h.The first recess 126m is between the first teat 126f and the 3rd teat 126h, and the second recess 126n is formed on the dark side of the second teat 126g.Two recess 126m and 126n can admit lock pawl 124b terminal of front tray 124 and engage with this end.
Shown in Figure 16 D, internal connector 126 is slided backward place the first recess 126m so that lock the end of pawl 124b, the end of lock pin 20b moves to the position that lock pin 20b and OSA30 are connected with 32 optics.On the other hand, make internal connector 126 place the second recess 126n to front slide so that lock the end of pawl 124b, lock pin 20b does not interfere lock unit 128 and OSA 30 and 32.
Therefore; Before lock unit 128 is placed on the position separately among the housing 10a with OSA 30,32; Internal connector 126 is slided backward so that lock pawl 124b and engage, thereby can lock pin 20b be placed the rotine positioning that does not engage with lock unit 128 with the first teat 126f on the first recess 126m.Then, can be with internal optical fiber F 6And F 8Be pulled in the first housing 10a, so that optical fiber is placed the final position.Traction internal optical fiber F 6And F 8Optical fiber is fixed, and make internal connector 126 to front slide so that lock pawl 124b engage with the second teat 126g on the second recess 126n, afterwards; Can under the situation of not interfering lock pin 20b and internal connector 126, lock unit 128 be assembled in the first housing 10a with OSA30,32.
Figure 17 is the skeleton view that the internal connector 226 of the another kind of type that obtains from the internal connector modification shown in Figure 16 B is shown.Modification internal connector 226 shown in Figure 17 is provided with the groove 226e with two recess 226m and 226n, but only is provided with a teat 226f.Other teat 126g that occurs among the last embodiment and 126h are replaced by the platform portion that these two teats are coupled together.Such internal connector 226 can play the effect identical with last embodiment 126, that is, two recess 226m and 226n confirm two positions of lock pin 20b.
Like Figure 14 and shown in Figure 180, wherein, Figure 18 A is observed from the bottom, and Figure 18 B from top view to, lock unit 28 is provided with four the slit 28as corresponding with the quantity of ROSA 30.Each side of each slit 28a has a pair of lock pawl 28b, and the outside surface of lock pawl 28b is provided with teat 28c.Teat 28c engages with the opening 26d of internal connector 26, so that internal connector 26 cooperates with lock unit 28.The rear side of lock unit 28 is provided with seam 28e.
Figure 19 A is the side view of ROSA 30, and Figure 19 B shows a slit of the observed lock unit 28 from the rear.Shown in Figure 19 A, ROSA 30 has two flange 30a and 30b along optical axis, and between flange 30a and 30b, has neck 30c.Simultaneously, shown in Figure 19 B, the rear wall 28h of lock unit 28 is provided with horseshoe incision 28g.The diameter L2 of the neck 30c of ROSA30 sets frontal width (frontage) L1 less times greater than otch 28g for.Because lock unit 28 is formed from a resin, therefore can, the frontal width that makes otch 28g easily ROSA30 be placed in the lock unit 28 when enlarging.In a single day ROSA30 is placed in the lock unit 28, just becomes to be difficult to from otch 28g, drop, and this can improve the throughput rate of intermediate module.Shown in figure 14, the front flange 30a of ROSA30 places the seam 28e of lock unit 28, and sleeve 30d is placed in the corresponding slit 28a.In Figure 19 A, OSA30 and 32 comprises sleeve assembly 30s and optical device 30e, and as stated, sleeve assembly 30s comprises sleeve 30d, front flange 30a, neck 30c and back flange 30b.Sleeve assembly 30s can be with internal optical fiber F 6And F 8Link together with optical device 30e optics, in addition, optical device 30e is equipped with semiconductor optical device, such as photodiode that is used for ROSA 30 and the laser diode (LD) that is used for TOSA 32.
To the lock unit 128 according to another embodiment of optical transceiver 1 be described with reference to figure 18B.Except the structure shown in Figure 18 A, the lock unit 128 of present embodiment also comprises the teat 128k that is positioned on the sidewall.This teat can prevent that the internal optical fiber that passes through from the below from departing from.
Figure 20 is along the internal optical fiber F that places internal connector 126 6Or F 8The cut-open view of optical axis intercepting.If internal connector 126 and lock unit 128 are combined together, then internal optical fiber F 6Lock pin 20b insert in the hole of sleeve assembly 30s, and the end of lock pin 20b carries out physics with the end of the suspension column 30u of the OSA that places lock unit 128 30 and contacts.The end of coil component 20a contacts with the middle part separator 126c of internal connector 126, and the other end contacts with flange 20d, and this flange is towards OSA 30 pushing lock pin 20b.Thereby even in the limited inner space of optical transceiver 1, the end that also can realize lock pin 20b reliably contacts with physics between the end of suspension column 30u.
Internal connector 26 and another modification of 126 have the arrangement of groove; Promptly; The internal connector 26 of first embodiment is provided with two teat 26f and 26g; And second embodiment is provided with three teat 126f to 126h, or teat 126f and platform portion that all the other two teat 126g and 126h are coupled together.Another modification of internal connector can be provided with a teat in groove 126e.This teat only plays the effect of catching on lock pawl 24b and 124b, to prevent that internal connector 26 and 126 skids off during assembling optical transceiver 1 from front tray 24.When internal connector was connected with lock unit 28, internal connector can break away from front tray 24.When only being left the finite space between front tray 24 and the lock unit 28, it is effective that the arrangement of above-mentioned internal connector just becomes.
With describing another kind of housing 110 and the optical plug that is installed in the front middle part place of housing.Figure 21 A illustrates the skeleton view of the front portion of the first housing 110a according to another embodiment of the present invention, and Figure 21 B is a front elevation.Shown in Figure 21 A and Figure 21 B, the front portion of the first housing 110a comprises the central region 111a that is separated out by sidewall 111i and rear wall 111j.Rear wall 111j is provided with and includes seat cut S 1With sub-otch S 2Paired two incision.Seat cut S 1Between the sleeve of pitch and SC type optical conenctor between pitch equate and sub-otch S 2Pitch than seat cut S 1Pitch narrow, and equate with the pitch of LC type optical conenctor.
The second portion R of the first housing 110a 2In comprise two kinds of groove G 2S and G 2L.Outer groove G 2Distance between the S and seat cut S 1Pitch about equally, and inner groovy G 2Distance between the L and sub-otch S 2Pitch equate.The third part R of the first housing 110a 3In also be provided with groove G 4S and G 4L, and groove G 4S and G 4L and second portion R 2Corresponding recesses G 2S and G 2L is continuous.Thereby, these grooves G 2S to G 4L is arranged on the straight line.
Figure 22 A to Figure 22 C shows the optical plug with SC type socket of the modification according to the present invention, and wherein optical plug 114 is assembled among the central region 111a.Figure 22 A shows the observed optical plug 114 from the rear, and Figure 22 B shows the observed optical plug 114 from the place ahead, and Figure 22 C is the exploded view of optical plug 114.Be similar to optical plug shown in Figure 2 14, modification optical plug 114 comprises housing 114a, sleeve bracing frame 114b and conducting strip 114c.
Optical plug 114 comprises two cavity 114A and 114B, and cavity 114A and 114B are used to admit first cylindrical shell 20c and the 22c of sleeve assembly.Two cavity 114A are separated by the rear wall 114e that the front surface with flange 20e and 22e contacts with 114B.Rear wall 114e also is provided with two opening 114h, and the first cylindrical shell 20c, 22c pass opening 114h.Have stage portion 114k around each opening 114h, the flange 20e and the 22e of sleeve assembly are placed in this stage portion.
Conducting strip 114c is attached to rear wall 114e.Conducting strip 114c is processed by conductive material, for example can be processed by the supatex fabric of conduction.Shown in figure 23, housing 114a and sleeve assembly 20,22 and conducting strip 114c fitted together form optical plug 114, optical plug 114 is installed in the central region 111a of the first housing 110a.
Particularly, the rear wall 111j that second cylindrical shell 20f of sleeve assembly and 22f pass central region 111a, and be placed on each seat cut S 1On.Figure 22 and optical plug shown in Figure 23 have the structure of SC type socket.Conducting strip 114c is placed between the rear wall 111j of rear wall 114e and central region 111a of Socket casing 114a.Antetheca 110d with the first housing 110a is threaded with cover 12, cover 12 with optical plug 114 by being pressed on the rear wall 111j, thereby conducting strip 114c can be placed between optical plug 114 and the rear wall 114j securely.
Only can also be provided with according to the optical plug 114 of present embodiment and to be fixed on the lug 114f on the sidewall 114g at the place, end.Lug 114f extends from the part that is fixed along the vertical direction.Therefore, the other end of lug 114f can reverse around this part that is fixed.On the other hand, the two side 111i of the central region 111a of the first housing 110a is provided with recess 111k.In the time of on optical plug 114 being placed on central region 111a; The front surface of lug 114f is resisted against on the back surface of recess 111k; Recess 111k with optical plug 114 backward by being pressed on the rear wall 111j, and temporarily fixed optics socket 114 till optical plug 114 places between cover 12 and the rear wall 111j the most at last.
Relation between cover 12 and the optical plug 114 will be described below in more detail; Cover 12 shown in figure 24 is provided with two couples of hole 12b and 12c and optical plug 114 is exposed to outer port one 2a; Wherein, Screw rod lock 16 passes hole 12c, and the screw that cover 12 is fixed to the first housing 110a passes hole 12b.The both sides of port one 2a be provided with extend back push lug 12d.Pushing lug 12d is resisted against on the antetheca 114j of optical plug 114 against optical plug 114.Cover 12 by depressing, optical plug 114 is pushed backward, and the back surface of the flange of sleeve assembly 20e and 22e contacts with rear wall 111j, conducting strip 114c places between above-mentioned flange and the rear wall 111j.
Shown in Figure 22 C, conducting strip 114c is provided with the hole 114r that is passed by the first cylindrical shell 20c and the 22c of sleeve assembly.In the present embodiment; The diameter of hole 114r is slightly littler than the diameter of the first cylindrical shell 20c and 22c; When the size that makes hole 114r enlarges with the first cylindrical shell 20c and 22c patchhole 114r and opening 114h in; Thereby can prevent between the first cylindrical shell 20c and 22c and hole 114r, to produce the gap, and then closure casing 110 inside reliably.
In addition, the rear wall 114e of Socket casing 114a is provided with a plurality of teats around stage portion 114k, thereby conducting strip 114c is contacted with rear wall 111j reliably.
Figure 25 shows another embodiment according to optical plug 214 of the present invention.Optical transceiver 1 of the present invention can be equipped with the optical plug 214 with LC type structure, to replace Figure 22 a to SC type socket shown in Figure 23.Pitch between two sleeves of LC type socket is narrower than the pitch between two sleeves of SC type socket.Therefore, the rear wall 111j of the optical transceiver 1 first housing 110a of present embodiment is provided with two incision, that is, and and seat cut S 1With sub-otch S 2, seat cut S wherein 1Be used for SC type optical plug and sub-otch S 2Be used for LC type socket.In addition, shown in Figure 21 A and Figure 21 B, second portion R 2Be provided with two kinds of guide recess G 2S and G 2L.Two groove G 2S prepares to be used for the internal optical fiber F that draws from the sleeve assembly of SC type socket 114 2And F 4, and groove G 2L prepares to be used for the internal optical fiber F that draws from LC type socket 214 2And F 4Thereby, go for two kinds of optical plugs according to the optical transceiver 1 of present embodiment, i.e. SC type socket and LC type socket.
Figure 26 A and Figure 26 B show another embodiment applicable to the optical plug 314 of optical transceiver 1.Socket casing 314a shown in Figure 26 A and Figure 26 B has the characteristic that can be different from previous embodiment, lug 314f and teat 314n.
Lug 314f in the present embodiment has crushable rib, and said rib is collapsible when lug 314 is positioned among the recess 111k of the first housing 110a.Particularly, lug 314f is provided with the rib that extends vertically and have triangular cross-section.Longitudinal size from the width on end to the back surface of lug 314f of rib less times greater than recess 111k, therefore, the end of rib can be crushed when being placed on lug 314f in the recess 111k, thereby can make optical plug 314 by being pressed on the rear wall 111j.
Socket casing 314a is not only peripheral but also on the upper surface of optical plug 314a and lower surface, be provided with a plurality of teat 314m and 314n at opening 314h and stage portion 314k.When optical plug 314 places under the situation between the first housing 110a and the second housing 110b the first housing 110a and the second housing 110b and other component-assembled together; The end of each teat 314n can be crushed, thereby can optical plug 314 be remained between housing 110a and the 110b reliably.In addition, when pressing against optical plug 314 on the rear wall 111j, the end of teat 314m can be crushed, thereby can optical plug 314 be fixed among the central region 111a reliably on the antetheca 110d that cover 12 is placed on the first housing 110a.
In the embodiment of above-mentioned optical plug, lug all is formed on the position that records from the front surface of Socket casing, and this position is the common residing position of two lugs on each sidewall.Yet the lug on each sidewall can be arranged obliquely, and also can be formed obliquely on each sidewall 111i with lug corresponding concave part 111k.Being in tilted layout of lug 114f, 214f and 314f and recess 111k can prevent optical plug 114,214 and 314 is put upside down setting.In addition, above-mentioned conducting strip 14 and 114 is that illustration goes out with the sheet metal, yet conducting strip can be the double-deck pattern of rubber and sheet metal.In this embodiment, sheet metal be placed on optical plug 114,214 and 314 and rear wall 111j between so that sheet metal contacts with rear wall 111j.
Below, the mechanism of description screw rod lock 16.As stated, with screw cover 12 is fixed to the first housing 10a, when making on the rear wall 11j that optical plug 14 is pressed against the first housing 10a, the cavity of optical plug 14 exposes from the optical port 12a of cover 12.
Figure 27 shows the screw rod lock 16 according to the embodiment of the invention.Screw rod lock 16 comprises the 16c of bar portion, and the end of the 16c of bar portion has knob 16a and the other end and has the screw thread 16b with the engage threaded of main connector 3a.Knob 16a is set to be used for that optical transceiver 1 is carried out manual operation.The 16c of bar portion also is provided with ring groove 16e and the flange 16f that is positioned at knob 16a side.Volute spring is placed between ring groove 16e and the flange 16f.The side space 10g that screw rod lock 16 places on the rib 10c that is formed on the first housing 10a.
Figure 28 illustrates the front portion of the first housing 10a with amplifying.Side channel 10g comprises the space 11p that width is bigger than the width of the remainder of groove 10g.Space 11p admits being used between ring groove 16e and flange 16f to settle helical spring part.Space 11p is provided with 11x of front step portion and the 11y of backward step portion.The 11x of front step portion faces with the front surface of flange 16e mutually, and then stage portion 11y abuts against on the volute spring.Volute spring is lead-screw lock 16 forward, and correspondingly, 16a is pushed forward at this effect lower knob, thus the engaging of the threaded hole on releasing screw thread 16b and the main connector, thus optical transceiver 1 is removed from main system.
In a preferred embodiment, screw rod lock 16 can be provided with packing ring in flange 16f side, so that make 16 rotations of screw rod lock prevent the volute spring rotation with the engage threaded of main connector 3a the time.Particularly, the flat shape that space 11p forms rectangle and packing ring can be rectangle, thereby prevents that packing ring from rotating in the 11p of space.
Refer again to Figure 28, the front surface of the first housing 10a is provided with the antetheca 10d of band transverse concave groove 11r, and transverse concave groove 11r can be with reference to figure 21B.Groove 11r extends near the side the knob 16a from the middle part of optical plug 14 to be installed.Bolt 13 places in the groove 11r.Figure 29 shows the bolt of being processed by sheet metal 13, and bolt 13 comprises the 13a of band portion, crook 13b and pushing part 13c.Pushing part 13c bends backward, and crook 13b steppedly extends forward.
Bolt 13 can also comprise the elastic 13d of the center that is positioned at the 13a of band portion.Extend below on the elastic 13d, and on bolt 13, produce transverse pressure, promptly bolt 13 is pressed to optical plug 14 by elastic 13d.Also be provided with another groove 11s that extends below on the front surface of the antetheca 10d of the first housing 10a, to admit the elastic 13d of bolt 13.Elastic 13d can be crooked in groove 11s.
On the other hand, can be provided with otch 114p and 314p on the sidewall of the optical plug shown in Figure 22 A to Figure 22 C, Figure 26 A and Figure 26 B, bolt 13 passes otch 114p and 314p.When the 13a of band portion that makes bolt 13 passed the otch of optical plug, the pushing part 13c of bolt 13 stretched into the cavity of optical plug.Pushing part 13c is bending backward in cavity.
Figure 30 A is an optical transceiver 1 when breaking away from main system 2, the cut-open view of the front portion of the optical transceiver 1 when promptly screw rod lock 16 separates with threaded hole.Figure 30 B is the front elevation of optical transceiver 1, and cover 12 is removed so that the antetheca 10d of optical transceiver 1 to be shown among the figure.As stated, bolt 13 is pushed to optical plug 14 under the elastic force effect of elastic 13d.When external optical connector 100 broke away from cavity 14B, promptly when cavity 14B did not admit aerial lug 100, the pushing part 13c of bolt 13 stretched among the cavity 14B.
Under the situation of above-mentioned arrangement, when screw rod lock 16 breaks away from threaded hole,, can prevent that therefore aerial lug 100 from inserting among the cavity 14B because the end of crook 13b is left in the cavity 14B near screw rod lock 16 and pushing part 13c.On the other hand, when screw rod lock 16 and engage threaded, the end of crook 13b is aimed at the ring groove 16e of screw rod lock 16.When aerial lug 100 is inserted cavity 14B, the pushing part 13c of aerial lug 100 pushing bolts 13, and the end of the crook 13b of bolt 13 can be retracted in the ring groove 16e.In addition, when the end of crook 13b was retracted into ring groove 16e, because crook 13b stops screw rod lock 16 to move forward, so screw rod lock 16 can not separate with threaded hole.
Therefore; When aerial lug 100 cooperates with optical plug 14; When promptly optical transceiver 1 being engaged with main system 2 through the screw rod lock 16 and the threaded hole of main system 2 are threaded; The optical transceiver 1 of present embodiment can prevent following two kinds of situation: a kind of situation is when optical transceiver 1 breaks away from main system 2, can not aerial lug be inserted in the optical plug 14; Another situation is when aerial lug 100 engages with optical plug 14, can not optical transceiver 1 be taken out from main system 2.
Elastic 13d plays the effect of sheet spring, promptly shown in Figure 30 D, aerial lug 100 inserted make in the optical plugs 14 that elastic 13d is crooked, and when cavity 14B was idle, elastic 13d promoted bolt 13 backward.Although only show the situation that bolt 13 has crooked pushing part 13c among the figure, pushing part 13c also can have arcuate shape.
Second embodiment
Below, describe the step of assembling in detail according to the optical transceiver 1 of second embodiment of the invention.The step that describes below is based on following assumed conditions, and optical transceiver 1 is provided with housing 100, front tray 124, back pallet 136 and the internal connector 126 of second embodiment.
The first step is installed in the 4th part R with back pallet 136 4On, optical multiplexer 20 and optical demultiplexer 22 are installed in position separately.Next step lays internal optical fiber F 2To F 8
Shown in Figure 31 A, in sender side, will be from the internal optical fiber F of optical multiplexer 20 extensions 6Be positioned over and be formed on part R 2And R 3In groove G 2To G 4In, make internal optical fiber F 6Extend to the 4th part R 4The pallet 136 guiding fiber F along the back 6Turn to receiver-side, and towards a side-lining of receiver-side, so that optical fiber F 6Arrive the R of first 1The 136c of eaves portion that is arranged on the pallet 136 of back can prevent optical fiber F 6Depart from.Can be according to internal optical fiber F 6Unnecessary length come optionally to use a plurality of eaves 136c of portion on the pallet 136 of back.
Shown in Figure 31 B, at receiver-side, will be from the internal optical fiber F of optical demultiplexer 22 extensions 8Be positioned over and be formed on part R 2And R 3In groove G 2And G 4In, make internal optical fiber F 8Extend to the 4th part R 4The pallet 136 guiding fiber F along the back 8Turn to sender side, and towards a side-lining of sender side, so that optical fiber F 8Arrive the R of first 1The 136c of eaves portion that is arranged on the pallet 136 of back can prevent optical fiber F 8Depart from.Can be according to internal optical fiber F 8Unnecessary length optionally use a plurality of eaves portion 136cs of back on the pallet 136.
Internal optical fiber F 6And F 8Can before laying, be installed together with lock pin 20b, spring coil 20a and flange 20d.
Next step, shown in Figure 31 C, will be from optical multiplexer 20 at groove G 2To G 6The interior internal optical fiber F that extends 2Traction to the four part R 4Along pallet 136 towards receiver-side guiding fiber F 2, then with optical fiber F 2Be placed on groove G 2S or G 2Among the L in the groove corresponding with the type that is installed in the optical plug 14 in the central region 111a.The 136c of eaves portion on the back pallet 136 can direct internal optical fiber F 2And prevent optical fiber F 2Depart from.Also can be according to optical fiber F 2Length optionally use a plurality of eaves 136c of portion.
At last, shown in Figure 31 D, the internal optical fiber F that draws from optical demultiplexer 22 4At second portion R 2With third part R 3Groove G 2To G 6In be directed to the 4th part R 4Front end.At the 4th part R 4, make internal optical fiber F 4Pallet 136 is crooked towards sender side along the back, and with the type corresponding groove G of optical plug 14 2S and G 2A groove is interior with internal optical fiber F among the L 4Guide to central region 111a.The 136c of eaves portion also can prevent internal optical fiber F 4Depart from.Can be according to optical fiber F 4Length optionally use a plurality of eaves 136c of portion.
Internal optical fiber F can laid 2To F 4Socket casing 114a, sleeve support 114b and conducting strip 114c are formed optical plug 114 before.Laying internal optical fiber F 2To F 8After, sleeve 20c is inserted the opening 114h on the rear wall 114e of optical plug 114 via the opening 114r on the conducting strip 114c.To be installed in the central region 111a of the first housing 110a with the optical plug 114 that sleeve 20c and 22c fit together.In this step, the lug 114f that is arranged on optical plug 114 sidewalls is placed in the recess 111k.
Then, front tray 124 is fixed on second portion R 2On.Make the internal optical fiber F in the side of the receiver-side that is laid in 6 Draw top board 124s below, below the preceding eaves 124x of portion, draw, and guide at last among each slit 124a of front tray 124 to sender side to front tray 124.Every optical fiber F 6Guided by guiding wall 124t and 124u, antetheca 124v, the preceding eaves 124x of portion and the slit eaves 124d of portion.And another internal optical fiber F of a side of the sender side that will be laid in 8Be drawn to top board 124s below, below the preceding eaves 124x of portion, draw, and guide to each slit 124a at last to receiver-side.Every optical fiber F 8Guided by guiding wall 124t and 124u, antetheca 124v, the preceding eaves 124x of portion and each slit eaves 124d of portion.Thereby, shown in figure 32, internal optical fiber F 6To F 8Can under unswerving situation, lay.
Next step fits together internal connector 126 and front tray 124.Particularly, the lock pawl 124b of front tray 124 is inserted the groove 126e of internal connector 126, and the end of lock pin 20b temporarily is placed in internal optical fiber F 6The position that can be connected with 32 optics with OSA30.Figure 33 B shows link position.Then, make internal connector 126 to front slide so that the end of lock pawl 124b place in the second recess 126n, thereby lock pin 20b can not interfere the installation of OSA30 and 32.Figure 33 A shows disengaging configuration.
Then, shown in figure 34, lock unit 128 is placed rotine positioning, and OSA30 and 32 is placed lock unit 128.Before mounting circuit boards 18, OSA30 is connected with corresponding FPC18d with 32.Circuit board 118 is installed on the first housing 110a, and the rib 19e of plug-board 19 is inserted in the groove 10v of the first housing 10a, thereby optical element and electrical equipment are installed on the first housing 10a.Before mounting circuit boards 18, can liner 34b be placed in the groove 10h, and can crown cap 35 be placed groove 10v.
Internal connector 126 is slided backward so that lock in the first recess 126m of groove 126e that the end of pawl 124b places internal connector 126; And the teat 128c of lock unit 128 is engaged with the opening 126d of internal connector 126, contact thereby can make the end of lock pin 20b and suspension column 30u among the OSA 30 and 32 carry out physics.
At last, under the situation between the rear wall 111j that optical plug 14 is placed on cover 12 and central region 111a, cover 12 is fixed to the first housing 110a.Another liner 34a is placed among the groove 111m of the second housing 110b, and another crown cap 35 is placed among the groove 11v, and the second housing 110b is fixed to the first housing 110a, thereby accomplished optical transceiver 1.

Claims (14)

1. pluggable optical transceiver that is installed on the main system comprises:
Optical plug is used to hold aerial lug; And
Mechanism, when said optical plug was admitted aerial lug, this mechanism prevented that said optical transceiver and said main system break away from, and when said optical transceiver and the disengaging of said main system, this mechanism prevents that said optical transceiver from admitting said aerial lug.
2. pluggable optical transceiver that is installed on the main system comprises:
Optical plug, it is used to admit aerial lug;
The screw rod lock, it is used for said optical transceiver and said main system are tightened together; And
Housing, it is used to install said optical plug,
Wherein, when said optical transceiver and said main system break away from, prevent that said optical plug from admitting said aerial lug.
3. pluggable optical transceiver according to claim 2 also comprises:
The bolt that said optical plug is engaged with said screw rod lock machine tool,
Wherein, an end of said bolt stretches in the said optical plug, when separating with said main system with the said screw rod of box lunch lock, prevents that said optical plug from admitting said aerial lug.
4. pluggable optical transceiver according to claim 3, wherein,
A said end of said bolt has arcuate shape.
5. pluggable optical transceiver according to claim 3, wherein,
Said screw rod lock is provided with groove, thereby said groove is admitted the other end of said bolt when said optical plug is admitted said aerial lug.
6. pluggable optical transceiver according to claim 3, wherein,
The other end of the said bolt of said screw rod lock pushing is so that a said end stretches in the said optical plug.
7. pluggable optical transceiver according to claim 3, wherein,
Said bolt is provided with elastic, and said housing is provided with the groove that is used to place said elastic, and
Set back under the resilient force that said bolt produces in said elastic and said groove and put.
8. pluggable optical transceiver according to claim 3, wherein,
Said optical plug is provided with the otch that is passed by a said end of said bolt.
9. pluggable optical transceiver according to claim 2, wherein,
When said optical plug is admitted said aerial lug, prevent that said screw rod lock from separating with said main system.
10. pluggable optical transceiver according to claim 9 also comprises:
The bolt that said optical plug is engaged with said screw rod lock machine tool,
The said external optical connector of being admitted by said optical plug pushes an end of said bolt, and said bolt is stretched into be arranged in the groove that said screw rod locks, and slides to prevent said screw rod lock.
11. pluggable optical transceiver according to claim 10, wherein,
A said end of said bolt has arcuate shape.
12. pluggable optical transceiver according to claim 10, wherein,
Said bolt is provided with elastic, and said housing is provided with the groove of admitting said elastic, and
Automatically stretch in the said optical plug under the elastic force effect of the said elastic of a said end in said groove of said bolt.
13. pluggable optical transceiver according to claim 9, wherein,
Said optical plug is provided with the otch that is passed by a said end of said bolt.
14. pluggable optical transceiver according to claim 2, wherein,
Said screw rod lock is provided with flange and volute spring, and said housing is provided with the groove that is used to place said screw rod lock, and
When said screw rod lock separated with said main system, said screw rod was locked in to set back under the said helical spring effect that places said groove and puts.
CN201210313551.4A 2009-10-29 2010-10-29 Pluggable optical transceiver and manufacturing method therefor Active CN102830470B (en)

Applications Claiming Priority (16)

Application Number Priority Date Filing Date Title
JP2009248592 2009-10-29
JP2009-248592 2009-10-29
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CN102830473A (en) 2012-12-19

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