WO1996027223A3 - Polarized fiber laser source - Google Patents

Polarized fiber laser source Download PDF

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Publication number
WO1996027223A3
WO1996027223A3 PCT/US1996/002626 US9602626W WO9627223A3 WO 1996027223 A3 WO1996027223 A3 WO 1996027223A3 US 9602626 W US9602626 W US 9602626W WO 9627223 A3 WO9627223 A3 WO 9627223A3
Authority
WO
WIPO (PCT)
Prior art keywords
fiber laser
polarization
polarized
laser source
along
Prior art date
Application number
PCT/US1996/002626
Other languages
French (fr)
Other versions
WO1996027223A2 (en
Inventor
Amato Mary A D
Gary A Ball
Gerald Meltz
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Priority to CA002212444A priority Critical patent/CA2212444C/en
Priority to EP96907896A priority patent/EP0812484B1/en
Priority to DE69604569T priority patent/DE69604569T2/en
Priority to JP52638296A priority patent/JP3833708B2/en
Publication of WO1996027223A2 publication Critical patent/WO1996027223A2/en
Publication of WO1996027223A3 publication Critical patent/WO1996027223A3/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • H01S3/0675Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • H01S3/06708Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
    • H01S3/06712Polarising fibre; Polariser

Abstract

A polarized fiber laser source includes a fiber laser (10) comprising a pair of Bragg gratings (14, 16) at opposite ends of a fiber laser cavity (18) which is doped with a rare-earth dopant so as to allow lasing to occur at a lasing wavelength μL. A grating tap (26) is provided along a portion of the laser cavity (18) to couple-out a predetermined amount of light along one polarization, e.g., the 's' polarization, at the lasing wavelength μL. This causes one polarization mode to experience more loss than the other, thereby allowing the fiber laser to lase only on the less lossy polarization mode and causing the laser output light (40) to be polarized only along such polarization.
PCT/US1996/002626 1995-03-02 1996-02-27 Polarized fiber laser source WO1996027223A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002212444A CA2212444C (en) 1995-03-02 1996-02-27 Polarized fiber laser source
EP96907896A EP0812484B1 (en) 1995-03-02 1996-02-27 Polarized fiber laser source
DE69604569T DE69604569T2 (en) 1995-03-02 1996-02-27 POLARIZED FIBER LASER SOURCE
JP52638296A JP3833708B2 (en) 1995-03-02 1996-02-27 Polarized fiber laser source

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/398,206 1995-03-02
US08/398,206 US5511083A (en) 1995-03-02 1995-03-02 Polarized fiber laser source

Publications (2)

Publication Number Publication Date
WO1996027223A2 WO1996027223A2 (en) 1996-09-06
WO1996027223A3 true WO1996027223A3 (en) 1996-10-10

Family

ID=23574431

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/002626 WO1996027223A2 (en) 1995-03-02 1996-02-27 Polarized fiber laser source

Country Status (7)

Country Link
US (1) US5511083A (en)
EP (1) EP0812484B1 (en)
JP (1) JP3833708B2 (en)
CA (1) CA2212444C (en)
DE (1) DE69604569T2 (en)
ES (1) ES2140070T3 (en)
WO (1) WO1996027223A2 (en)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9409033D0 (en) * 1994-05-06 1994-06-29 Univ Southampton Optical fibre laser
NO302441B1 (en) * 1995-03-20 1998-03-02 Optoplan As Fiber optic end-pumped fiber laser
US5757832A (en) * 1995-04-27 1998-05-26 Canon Kabushiki Kaisha Optical semiconductor device, driving method therefor and light source and opitcal communication system using the same
US5600665A (en) * 1995-07-28 1997-02-04 Hughes Aircraft Company Multiple output fiber laser with passive frequency control and method
US5647038A (en) * 1995-08-30 1997-07-08 Hughes Aircraft Company Narrow bandwidth Bragg grating reflector for use in an optical waveguide
US6111681A (en) 1996-02-23 2000-08-29 Ciena Corporation WDM optical communication systems with wavelength-stabilized optical selectors
US5699377A (en) * 1996-04-30 1997-12-16 E-Tek Dynamics, Inc. Narrow linewidth, stabilized semiconductor laser source
US5754718A (en) * 1996-08-26 1998-05-19 Jds Fitel Inc. Hybrid optical filtering circuit
US6016375A (en) * 1997-01-08 2000-01-18 Hill; Kenneth O. Wavelength selective fiber to fiber optical tap
US7656578B2 (en) * 1997-03-21 2010-02-02 Imra America, Inc. Microchip-Yb fiber hybrid optical amplifier for micro-machining and marking
US7576909B2 (en) * 1998-07-16 2009-08-18 Imra America, Inc. Multimode amplifier for amplifying single mode light
WO1999027619A2 (en) * 1997-10-01 1999-06-03 Scientific-Atlanta, Inc. Multi-mode fiber lasers
US6041070A (en) 1997-11-14 2000-03-21 Sdl, Inc. Resonant pumped short cavity fiber laser
US6330383B1 (en) 1998-02-20 2001-12-11 University Of Southern California Disperson compensation by using tunable nonlinearly-chirped gratings
US5982963A (en) * 1997-12-15 1999-11-09 University Of Southern California Tunable nonlinearly chirped grating
US6915040B2 (en) 1997-12-15 2005-07-05 University Of Southern California Devices and applications based on tunable wave-guiding bragg gratings with nonlinear group delays
US6453093B2 (en) * 2000-01-07 2002-09-17 Univerisity Of Southern California Tunable optical dispersion-slope compensation based on a nonlinearly-chirped bragg grating
US6122299A (en) * 1997-12-31 2000-09-19 Sdl, Inc. Angled distributed reflector optical device with enhanced light confinement
US6768825B2 (en) 1998-05-06 2004-07-27 Weatherford/Lamb, Inc. Optical sensor device having creep-resistant optical fiber attachments
US6507693B2 (en) 1998-05-06 2003-01-14 Cidra Corporation Optical filter device having creep-resistant optical fiber attachments
JP3250609B2 (en) * 1998-07-01 2002-01-28 日本電気株式会社 Laser oscillation device, laser knife
US6330257B1 (en) 1998-08-06 2001-12-11 Sdl, Inc. Polarization-insensitive laser stabilization using multiple waveguide gratings
US6188712B1 (en) 1998-11-04 2001-02-13 Optigain, Inc. Asymmetrical distributed feedback fiber laser
US6275512B1 (en) 1998-11-25 2001-08-14 Imra America, Inc. Mode-locked multimode fiber laser pulse source
US6519388B1 (en) 1998-12-04 2003-02-11 Cidra Corporation Tube-encased fiber grating
US6982996B1 (en) 1999-12-06 2006-01-03 Weatherford/Lamb, Inc. Large diameter optical waveguide, grating, and laser
BR9915956B1 (en) 1998-12-04 2011-10-18 pressure sensor, and method for sensing pressure.
AU3111900A (en) 1998-12-04 2000-06-19 Cidra Corporation Pressure-isolated bragg grating temperature sensor
US6810178B2 (en) * 1998-12-04 2004-10-26 Cidra Corporation Large diameter optical waveguide having blazed grating therein
US6621957B1 (en) 2000-03-16 2003-09-16 Cidra Corporation Temperature compensated optical device
US6490931B1 (en) 1998-12-04 2002-12-10 Weatherford/Lamb, Inc. Fused tension-based fiber grating pressure sensor
US6865194B1 (en) 1998-12-04 2005-03-08 Cidra Corporation Strain-isolated Bragg grating temperature sensor
US6278811B1 (en) 1998-12-04 2001-08-21 Arthur D. Hay Fiber optic bragg grating pressure sensor
DE69924002T2 (en) 1998-12-04 2006-04-06 Cidra Corp., Wallingford COMPRESSION-MATCHED GRAGGGITTER AND COMPRESSION-MATCHED LASER
EP1137920B1 (en) 1998-12-04 2005-02-16 Weatherford/Lamb, Inc. Bragg grating pressure sensor
DE19925686A1 (en) * 1999-06-04 2000-12-14 Zeiss Carl Jena Gmbh Fibre laser for video projector etc, has polarizing fibre e.g. spliced onto end of lasing optical fibre
US6243515B1 (en) * 1999-06-18 2001-06-05 Trw Inc. Apparatus for optically pumping an optical fiber from the side
IL147800A (en) 1999-08-13 2005-03-20 California Inst Of Techn In fiber frequency locker
US6996316B2 (en) * 1999-09-20 2006-02-07 Cidra Corporation Large diameter D-shaped optical waveguide and coupler
US6439055B1 (en) 1999-11-15 2002-08-27 Weatherford/Lamb, Inc. Pressure sensor assembly structure to insulate a pressure sensing device from harsh environments
US6626043B1 (en) * 2000-01-31 2003-09-30 Weatherford/Lamb, Inc. Fluid diffusion resistant glass-encased fiber optic sensor
WO2001095440A1 (en) * 2000-06-07 2001-12-13 Carl Zeiss Jena Gmbh Laser with a fiber optical waveguide
ATE279798T1 (en) * 2000-06-20 2004-10-15 Evotec Ag FIBER LASER
US6815828B1 (en) * 2000-07-18 2004-11-09 Northrop Grumman Corporation Large multi-function integrated circuit device
CA2436753C (en) 2001-02-06 2009-03-17 Weatherford/Lamb, Inc. Highly sensitive cross axis accelerometer
US7088877B2 (en) * 2001-06-13 2006-08-08 Intel Corporation Method and apparatus for tuning a bragg grating in a semiconductor substrate
US7006537B2 (en) * 2001-08-07 2006-02-28 Hrl Laboratories, Llc Single polarization fiber laser
US6816514B2 (en) 2002-01-24 2004-11-09 Np Photonics, Inc. Rare-earth doped phosphate-glass single-mode fiber lasers
US6882664B2 (en) * 2002-02-28 2005-04-19 Lucent Technologies Inc. Laser with internally coupled pump source
ES2261598T3 (en) * 2002-03-06 2006-11-16 Aston University GENERATION OF ELECTRONIC CARRIER SIGNS IN THE OPTICAL DOMAIN.
US6788727B2 (en) * 2002-06-13 2004-09-07 Intel Corporation Method and apparatus for tunable wavelength conversion using a bragg grating and a laser in a semiconductor substrate
US6950577B2 (en) * 2002-07-01 2005-09-27 Intel Corporation Waveguide-based Bragg gratings with spectral sidelobe suppression and method thereof
JP4007118B2 (en) * 2002-08-12 2007-11-14 住友電気工業株式会社 Light emitting device, optical module, and grating chip
US7245792B2 (en) * 2002-08-16 2007-07-17 Intel Corporation Silicon-based tunable single passband optical filter
ATE348425T1 (en) * 2003-03-03 2007-01-15 Cit Alcatel RAMAN FIBER LASER WITH MULTI-WAVE LENGTH, STABLE, SMALL OUTPUT FOR SEED LASER APPLICATIONS
US7689087B2 (en) * 2003-03-21 2010-03-30 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry, Through The Communications Research Centre Canada Method of changing the birefringence of an optical waveguide by laser modification of the cladding
US7120340B2 (en) 2003-06-19 2006-10-10 Corning Incorporated Single polarization optical fiber laser and amplifier
DK200301835A (en) * 2003-12-11 2005-06-12 Koheras As Single frequency thulium fiber laser
WO2005074573A2 (en) 2004-01-30 2005-08-18 Nufern Method and apparatus for providing light having a selected polarization with an optical fiber
US7724422B2 (en) * 2004-01-30 2010-05-25 Nufern Method and apparatus for providing light having a selected polarization with an optical fiber
US20050242287A1 (en) * 2004-04-30 2005-11-03 Hosain Hakimi Optical terahertz generator / receiver
US20050280887A1 (en) * 2004-06-02 2005-12-22 Betin Alexander A Outcoupler with bragg grating and system and method using same
US7197209B2 (en) * 2004-07-15 2007-03-27 Bae Systems Information And Electronic Systems Integration Inc. Optical distribution system for sensors
US7590155B2 (en) * 2004-08-05 2009-09-15 Jian Liu Hybrid high power laser to achieve high repetition rate and high pulse energy
GB0500277D0 (en) * 2005-01-07 2005-02-16 Southampton Photonics Ltd Apparatus for propagating optical radiation
CN101253659B (en) * 2005-08-29 2010-12-29 松下电器产业株式会社 Fiber laser and optical device
WO2007066747A1 (en) * 2005-12-09 2007-06-14 Matsushita Electric Industrial Co., Ltd. Fiber laser
CA2661110C (en) 2006-10-25 2017-06-20 Lxdata Inc. Tilted grating sensor
US7949215B2 (en) * 2008-04-18 2011-05-24 Ofs Fitel, Llc Apparatus for side fire fiber lasers
US8272236B2 (en) 2008-06-18 2012-09-25 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry, Through The Communications Research Centre Canada High temperature stable fiber grating sensor and method for producing same
JP5224213B2 (en) * 2008-09-19 2013-07-03 学校法人近畿大学 Fiber optic gyro
US20100078412A1 (en) * 2008-09-30 2010-04-01 Caterpillar Inc. Hybrid welding method
JP2011114061A (en) * 2009-11-25 2011-06-09 Fujikura Ltd Laser oscillator and mode filter
WO2012149068A1 (en) * 2011-04-25 2012-11-01 Ofs Fitel, Llc Raman distributed feedback fiber laser and high power laser system using the same
US9575209B2 (en) 2012-12-22 2017-02-21 Halliburton Energy Services, Inc. Remote sensing methods and systems using nonlinear light conversion and sense signal transformation
US9091785B2 (en) 2013-01-08 2015-07-28 Halliburton Energy Services, Inc. Fiberoptic systems and methods for formation monitoring
US20140198377A1 (en) * 2013-01-15 2014-07-17 Omron Corporation Laser oscillator
US10241229B2 (en) 2013-02-01 2019-03-26 Halliburton Energy Services, Inc. Distributed feedback fiber laser strain sensor systems and methods for subsurface EM field monitoring
CA2939361A1 (en) 2014-02-28 2015-09-03 Halliburton Energy Services, Inc. Optical electric field sensors having passivated electrodes
WO2016085511A1 (en) 2014-11-26 2016-06-02 Halliburton Energy Services, Inc. Onshore electromagnetic reservoir monitoring
US9651706B2 (en) 2015-05-14 2017-05-16 Halliburton Energy Services, Inc. Fiberoptic tuned-induction sensors for downhole use
WO2017014773A1 (en) 2015-07-22 2017-01-26 Halliburton Energy Services, Inc. Electromagnetic monitoring with formation-matched resonant induction sensors
CN106001926B (en) * 2016-06-23 2018-02-27 长春理工大学 The laser of view-based access control model sensing-real-time automaton of electric arc combined welding and its welding method
JP2020134722A (en) * 2019-02-20 2020-08-31 株式会社フジクラ Optical device and laser device
CN110380326B (en) * 2019-07-29 2020-10-23 武汉电信器件有限公司 Optical signal output device and method, and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543509A1 (en) * 1985-12-10 1987-06-11 Philips Patentverwaltung Arrangement for frequency stabilization and bandwidth narrowing of lasers, especially semiconductor lasers
EP0486930A2 (en) * 1990-11-20 1992-05-27 General Instrument Corporation Of Delaware Laser with longitudinal mode selection
US5166940A (en) * 1991-06-04 1992-11-24 The Charles Stark Draper Laboratory, Inc. Fiber laser and method of making same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE191063T1 (en) * 1984-08-13 1987-01-15 United Technologies Corp., Hartford, Conn., Us METHOD FOR STORING OPTICAL GRIDS IN FIBER OPTICS.
US5042897A (en) * 1989-12-26 1991-08-27 United Technologies Corporation Optical waveguide embedded light redirecting Bragg grating arrangement
US5061032A (en) * 1989-12-26 1991-10-29 United Technologies Corporation Optical waveguide embedded light redirecting and focusing bragg grating arrangement
US5048913A (en) * 1989-12-26 1991-09-17 United Technologies Corporation Optical waveguide embedded transverse spatial mode discrimination filter
US5305335A (en) * 1989-12-26 1994-04-19 United Technologies Corporation Single longitudinal mode pumped optical waveguide laser arrangement
US5317576A (en) * 1989-12-26 1994-05-31 United Technologies Corporation Continously tunable single-mode rare-earth doped pumped laser arrangement
US5103456A (en) * 1990-07-30 1992-04-07 Spectra Diode Laboratories, Inc. Broad beam laser diode with integrated amplifier
GB2254183B (en) * 1991-03-27 1995-01-18 Marconi Gec Ltd An amplifier/filter combination
US5237576A (en) * 1992-05-05 1993-08-17 At&T Bell Laboratories Article comprising an optical fiber laser
US5422897A (en) * 1994-01-28 1995-06-06 British Telecommunications Public Limited Company Two-stage mono-mode optical fibre laser

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543509A1 (en) * 1985-12-10 1987-06-11 Philips Patentverwaltung Arrangement for frequency stabilization and bandwidth narrowing of lasers, especially semiconductor lasers
EP0486930A2 (en) * 1990-11-20 1992-05-27 General Instrument Corporation Of Delaware Laser with longitudinal mode selection
US5166940A (en) * 1991-06-04 1992-11-24 The Charles Stark Draper Laboratory, Inc. Fiber laser and method of making same

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
BALL G A ET AL: "60 MW 1.5 M SINGLE-FREQUENCY LOW-NOISE FIBER LASER MOPA", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 6, no. 2, 1 February 1994 (1994-02-01), pages 192 - 194, XP000439747 *
KRINGLEBOTN J T ET AL: "ER3+:YB3+-CODOPED FIBER DISTRIBUTED-FEEDBACK LASER", OPTICS LETTERS, vol. 19, no. 24, 15 December 1994 (1994-12-15), pages 2101 - 2103, XP000485804 *
KRINGLEBOTN J T ET AL: "Highly-efficient, low-noise grating-feedback Er/sup 3+/:Yb/sup 3+/ codoped fibre laser", ELECTRONICS LETTERS, 9 JUNE 1994, UK, vol. 30, no. 12, ISSN 0013-5194, pages 972 - 973, XP002008679 *
MELTZ G ET AL: "IN-FIBER BRAGG GRATING TAP", OPTICAL FIBER COMMUNICATION CONFERENCE. (OFC), SAN FRANCISCO, JAN. 22 - 26, 1990, vol. 1, 22 January 1990 (1990-01-22), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 24, XP000146226 *

Also Published As

Publication number Publication date
CA2212444C (en) 2005-05-24
DE69604569D1 (en) 1999-11-11
US5511083A (en) 1996-04-23
DE69604569T2 (en) 2000-01-27
JP3833708B2 (en) 2006-10-18
EP0812484A2 (en) 1997-12-17
WO1996027223A2 (en) 1996-09-06
ES2140070T3 (en) 2000-02-16
EP0812484B1 (en) 1999-10-06
CA2212444A1 (en) 1996-09-06
JPH11501158A (en) 1999-01-26

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