WO2002091045A3 - Compact tunable optical wavelength interleaver - Google Patents

Compact tunable optical wavelength interleaver Download PDF

Info

Publication number
WO2002091045A3
WO2002091045A3 PCT/US2001/043683 US0143683W WO02091045A3 WO 2002091045 A3 WO2002091045 A3 WO 2002091045A3 US 0143683 W US0143683 W US 0143683W WO 02091045 A3 WO02091045 A3 WO 02091045A3
Authority
WO
WIPO (PCT)
Prior art keywords
beams
reflected
wavelength
polarized
input
Prior art date
Application number
PCT/US2001/043683
Other languages
French (fr)
Other versions
WO2002091045A2 (en
Inventor
Gan Zhou
Kuang-Yi Wu
Sihan Lin
Ding Wang
Original Assignee
Chorum Technologies Lp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chorum Technologies Lp filed Critical Chorum Technologies Lp
Priority to AU2001297833A priority Critical patent/AU2001297833A1/en
Publication of WO2002091045A2 publication Critical patent/WO2002091045A2/en
Publication of WO2002091045A3 publication Critical patent/WO2002091045A3/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29302—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means based on birefringence or polarisation, e.g. wavelength dependent birefringence, polarisation interferometers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2706—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters
    • G02B6/2713—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters cascade of polarisation selective or adjusting operations
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2706—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters
    • G02B6/2713—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters cascade of polarisation selective or adjusting operations
    • G02B6/272—Optical coupling means with polarisation selective and adjusting means as bulk elements, i.e. free space arrangements external to a light guide, e.g. polarising beam splitters cascade of polarisation selective or adjusting operations comprising polarisation means for beam splitting and combining
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29358—Multiple beam interferometer external to a light guide, e.g. Fabry-Pérot, etalon, VIPA plate, OTDL plate, continuous interferometer, parallel plate resonator
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
    • G02B6/29386—Interleaving or deinterleaving, i.e. separating or mixing subsets of optical signals, e.g. combining even and odd channels into a single optical signal
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/29395—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device configurable, e.g. tunable or reconfigurable
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/06—Polarisation multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0003—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
    • G02B6/2766—Manipulating the plane of polarisation from one input polarisation to another output polarisation, e.g. polarisation rotators, linear to circular polarisation converters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
    • G02B6/2773—Polarisation splitting or combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0026—Construction using free space propagation (e.g. lenses, mirrors)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0032—Construction using static wavelength routers (e.g. arrayed waveguide grating router [AWGR] )
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0035—Construction using miscellaneous components, e.g. circulator, polarisation, acousto/thermo optical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00—Optical: systems and elements
    • Y10S359/90—Methods

Abstract

An optical wavelength router separates even and odd optical channels from an input WDM signal. The input beam is first converted into a pair of orthogonally-polarized beams.One of the beams is reflected by a mirror, while the other is reflected by a Fabry-Perot resonator (or etalon) (35). The group delay of the reflected beams is strongly dependent on wavelength. The beams reflected from the resonator andmirror are combined and interfere in a birefringent element (e.g., a beam displacer (34) or polarized beamsplitter) to produce a beam having mixed polarization as a function of wavelength. The polarized components of this beam are separated by a polarization-dependent routing element (33) to produce two output beams containing complementary subsets of the input optical spectrum (e.g., even optical channels are routed to output port A an odd optical channels are routed to output port B).
PCT/US2001/043683 2000-11-20 2001-11-19 Compact tunable optical wavelength interleaver WO2002091045A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001297833A AU2001297833A1 (en) 2000-11-20 2001-11-19 Compact tunable optical wavelength interleaver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/717,050 2000-11-20
US09/717,050 US6498680B1 (en) 1996-10-29 2000-11-20 Compact tunable optical wavelength interleaver

Publications (2)

Publication Number Publication Date
WO2002091045A2 WO2002091045A2 (en) 2002-11-14
WO2002091045A3 true WO2002091045A3 (en) 2003-06-05

Family

ID=24880507

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/043683 WO2002091045A2 (en) 2000-11-20 2001-11-19 Compact tunable optical wavelength interleaver

Country Status (3)

Country Link
US (1) US6498680B1 (en)
AU (1) AU2001297833A1 (en)
WO (1) WO2002091045A2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020085252A1 (en) * 2000-07-28 2002-07-04 Chen Gang Paul Interleaver filters employing non-birefringent elements
US6570711B2 (en) * 2000-08-01 2003-05-27 Jds Uniphase Inc. Virtual waveplate and optical channel interleaver formed therewith
US6907167B2 (en) * 2001-01-19 2005-06-14 Gazillion Bits, Inc. Optical interleaving with enhanced spectral response and reduced polarization sensitivity
US6690846B2 (en) * 2001-03-01 2004-02-10 Chorum Technologies Lp Dispersion-compensated optical wavelength router
US6717719B1 (en) * 2001-10-01 2004-04-06 The United States Of America As Represented By The Secretary Of The Air Force Coherent optical beam combination using double-coated glass mirrors/mirror pairs
US6724539B2 (en) * 2001-11-02 2004-04-20 Sumitomo Electric Industries, Ltd. Interleaver
US8750702B1 (en) * 2002-06-21 2014-06-10 Rockstar Consortium Us Lp Passive optical loopback
US6891994B2 (en) * 2002-10-21 2005-05-10 Stratos International, Inc. Micro optical design for DWDM interleavers with narrow channel spacing
US7352428B2 (en) * 2003-02-21 2008-04-01 Xtellus Inc. Liquid crystal cell platform
US6943768B2 (en) * 2003-02-21 2005-09-13 Xtellus Inc. Thermal control system for liquid crystal cell
US7355671B2 (en) * 2003-02-21 2008-04-08 Xtellus Inc. Fabrication method for liquid crystal cell
US20060007386A1 (en) * 2003-02-21 2006-01-12 Extellus Usa Flat top tunable filter with integrated detector
US7009680B2 (en) * 2003-06-02 2006-03-07 Xtellus Inc. Narrow band tunable filter with integrated detector
US7133202B1 (en) * 2004-04-05 2006-11-07 Rainbow Communications Inc. Method and system for flexible and cost effective dynamic tilt gain equalizer
US7768708B1 (en) 2006-02-03 2010-08-03 Raytheon Company Light source having spatially interleaved light beams
US10095016B2 (en) 2011-01-04 2018-10-09 Nlight, Inc. High power laser system
US9409255B1 (en) 2011-01-04 2016-08-09 Nlight, Inc. High power laser imaging systems
US9429742B1 (en) 2011-01-04 2016-08-30 Nlight, Inc. High power laser imaging systems
US9720244B1 (en) 2011-09-30 2017-08-01 Nlight, Inc. Intensity distribution management system and method in pixel imaging
US9310248B2 (en) 2013-03-14 2016-04-12 Nlight, Inc. Active monitoring of multi-laser systems
KR102099722B1 (en) * 2014-02-05 2020-05-18 엔라이트 인크. Single-emitter line beam system
CN105092032B (en) * 2015-06-30 2018-07-13 北京师范大学 Transient state high resolution spectrometer based on F-P etalons
US20170176781A1 (en) * 2015-12-18 2017-06-22 Electro-Optics Technology, Inc. Single and multi-stage high power optical isolators using a single polarizing element
IL301816A (en) * 2020-12-29 2023-06-01 Monocrom S L Spectral splitter device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724165A (en) * 1996-07-23 1998-03-03 Macro-Vision Communications, L.L.C. Fault-tolerant optical routing switch
WO2000051247A2 (en) * 1999-02-10 2000-08-31 Avanex Corporation Interferometer for multiplexer utilizing a phase differential method
WO2001065704A2 (en) * 2000-03-02 2001-09-07 Chorum Technologies Lp Optical wavelength router based on polarization interferometer

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2295590A1 (en) 1974-12-16 1976-07-16 Cilas LASER LIGHT PULSE TREATMENT DEVICE
US4746216A (en) * 1986-03-28 1988-05-24 Zygo Corporation Angle measuring interferometer
US4919522A (en) 1988-02-25 1990-04-24 Geo-Centers, Inc. Optical switch having birefringent element
US5155623A (en) 1988-09-23 1992-10-13 At&T Bell Laboratories Arrangement for imaging multiple arrays of light beams
US4950078A (en) 1988-12-08 1990-08-21 Zygo Corporation High accuracy differential plane mirror interferometer
US5172186A (en) * 1990-07-03 1992-12-15 Konica Corporation Laser interferometry length measuring an apparatus employing a beam slitter
US5136671A (en) 1991-08-21 1992-08-04 At&T Bell Laboratories Optical switch, multiplexer, and demultiplexer
US5381250A (en) 1992-11-06 1995-01-10 Displaytech, Inc. Electro-optical switch with 4 port modules with electro-optic polarization rotators
JP2986295B2 (en) 1992-12-08 1999-12-06 松下電器産業株式会社 Optical isolator
US5363228A (en) 1993-03-05 1994-11-08 General Electric Company Optical device with spatial light modulators for switching arbitrarily polarized light
JP2986302B2 (en) 1993-03-10 1999-12-06 松下電器産業株式会社 Optical isolator
US5414541A (en) 1993-06-01 1995-05-09 Bell Communications Research, Inc. Optical switch employing first and second ferroelectric cells with alignment layers having alignment directions offset by 45°
US5471340A (en) 1994-01-07 1995-11-28 Jds Fitel Inc. Reflective optical non-reciprocal devices
JP3153406B2 (en) 1994-03-03 2001-04-09 松下電器産業株式会社 Optical circuit and optical transmission system using the same
US5818626A (en) 1994-08-29 1998-10-06 Agfa Division, Bayer Corp. Method and apparatus for optical isolation
US5488500A (en) 1994-08-31 1996-01-30 At&T Corp. Tunable add drop optical filtering method and apparatus
US5596661A (en) 1994-12-28 1997-01-21 Lucent Technologies Inc. Monolithic optical waveguide filters based on Fourier expansion
US6028706A (en) * 1995-07-26 2000-02-22 Fujitsu Limited Virtually imaged phased array (VIPA) having a varying reflectivity surface to improve beam profile
US6144494A (en) 1995-07-26 2000-11-07 Fujitsu Limited Virtually imaged phased array (VIPA) having spacer element and optical length adjusting element
US5680490A (en) 1995-09-08 1997-10-21 Lucent Technologies Inc. Comb splitting system and method for a multichannel optical fiber communication network
JPH09116492A (en) 1995-10-18 1997-05-02 Nec Corp Wavelength multiplex light amplifying/repeating method/ device
US5606439A (en) 1996-04-10 1997-02-25 Macro-Vision Technology , Inc. Tunable add/drop optical filter
US5867291A (en) 1996-10-29 1999-02-02 Chorum Technologies Inc. Programmable wavelength router
US5694233A (en) 1996-07-23 1997-12-02 Macro-Vision Communications, Llc Switchable wavelength router
US5912748A (en) 1996-07-23 1999-06-15 Chorum Technologies Inc. Switchable wavelength router
CN1060572C (en) 1996-11-13 2001-01-10 陈祖培 Pyrometric cone high density wave divided multiplexing device
US6130971A (en) * 1998-08-06 2000-10-10 Avanex Corporation Fiber optic dense wavelength division multiplexer with a phase differential method of wavelength separation utilizing a polarization beam splitter and a nonlinear interferometer
US6222958B1 (en) * 1999-07-22 2001-04-24 Jds Fitel Inc. Optical interleaver/de-interleaver
US6169626B1 (en) * 1999-06-29 2001-01-02 E-Tek Dynamics Optical signal interleaver
US6560015B1 (en) * 1999-09-23 2003-05-06 Avanex Corporation High-isolation dense wavelength division multiplexer utilizing birefringent plates and a non-linear interferometer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724165A (en) * 1996-07-23 1998-03-03 Macro-Vision Communications, L.L.C. Fault-tolerant optical routing switch
WO2000051247A2 (en) * 1999-02-10 2000-08-31 Avanex Corporation Interferometer for multiplexer utilizing a phase differential method
WO2001065704A2 (en) * 2000-03-02 2001-09-07 Chorum Technologies Lp Optical wavelength router based on polarization interferometer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DINGEL B B ET AL: "MULTIFUNCTION OPTICAL FILTER WITH A MICHELSON-GIRES-TOURNOIS INTERFEROMETER FOR WAVELENGTH-DIVISION-MULTIPLEXED NETWORK SYSTEM APPLICATIONS", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, US, vol. 23, no. 14, 15 July 1998 (1998-07-15), pages 1099 - 1101, XP000783052, ISSN: 0146-9592 *

Also Published As

Publication number Publication date
US6498680B1 (en) 2002-12-24
AU2001297833A1 (en) 2002-11-18
WO2002091045A2 (en) 2002-11-14

Similar Documents

Publication Publication Date Title
WO2002091045A3 (en) Compact tunable optical wavelength interleaver
US6243200B1 (en) Optical wavelength router based on polarization interferometer
JP2545047B2 (en) Optical carrier extraction and re-insertion equipment for optical communication networks
US6665320B1 (en) Wideband tunable laser sources with multiple gain elements
US5619368A (en) Optical frequency shifter
WO1998047254A3 (en) N x m optical wavelength routing switch
US6810171B2 (en) Dispersion-compensated optical wavelength router
US11159239B2 (en) Single-fiber bidirectional optical transceiver subassembly
JPH0239131A (en) Method for stabilizing frequency interval and optical heterodyne or optical homodyne communication method
WO2002054544A3 (en) Tunable semiconductor laser having a cavity with wavelength selective mirror and mach-tehnder interferometer
JPH1093164A (en) Multi pre-wavelength light source and variable discrete wavelength light source
US6028881A (en) Wavelength selectable laser source
WO2001089128A3 (en) A reconfigurable optical switch
JPH07336327A (en) Transmission type optical filter, multi-wavelength demultiplexing filter and ring laser
WO2003012506A3 (en) Electro optical device with parallel sections for orthogonal polarization modes
CA2438185A1 (en) Method and apparatus for an optical filter
EP1137308A3 (en) Programmable optical switch apparatus
JP2001311972A5 (en)
JP2001044934A (en) Wavelength multiplex optical transmitter
US6965479B2 (en) Optical filter, interleaver, and optical communication system
WO2001084200A3 (en) Optical wdm device having polarization elements
JPH11271817A (en) Optical filter
CN110459937B (en) Laser device
US6768591B2 (en) Interleaver
Lee et al. Multiwavelength switchable SOA-fiber lasers using comb filters

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ CZ DE DE DK DK DM DZ EC EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP