DE69228393D1 - Faseroptischer Verstärker - Google Patents

Faseroptischer Verstärker

Info

Publication number
DE69228393D1
DE69228393D1 DE69228393T DE69228393T DE69228393D1 DE 69228393 D1 DE69228393 D1 DE 69228393D1 DE 69228393 T DE69228393 T DE 69228393T DE 69228393 T DE69228393 T DE 69228393T DE 69228393 D1 DE69228393 D1 DE 69228393D1
Authority
DE
Germany
Prior art keywords
fiber optic
optic amplifier
amplifier
fiber
optic
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69228393T
Other languages
English (en)
Other versions
DE69228393T2 (de
Inventor
Takashi Mizuochi
Tadayoshi Kitayama
Katsuhiro Shimizu
Kiwami Matsushita
Nobuyuki Takemura
Eiichi Nakagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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
Priority claimed from JP29286591A external-priority patent/JP3137391B2/ja
Priority claimed from JP3184692A external-priority patent/JPH05235442A/ja
Priority claimed from JP8551892A external-priority patent/JP3010897B2/ja
Priority claimed from JP4162786A external-priority patent/JP3008673B2/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of DE69228393D1 publication Critical patent/DE69228393D1/de
Application granted granted Critical
Publication of DE69228393T2 publication Critical patent/DE69228393T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/1301—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers
    • H01S3/13013—Stabilisation of laser output parameters, e.g. frequency or amplitude in optical amplifiers by controlling the optical pumping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/29—Repeaters
    • H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
    • H04B10/293—Signal power control
    • H04B10/2933—Signal power control considering the whole optical path
    • H04B10/2935—Signal power control considering the whole optical path with a cascade of amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094011—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with bidirectional pumping, i.e. with injection of the pump light from both two ends of the fibre
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/09408—Pump redundancy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094096—Multi-wavelength pumping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
    • H01S3/2383—Parallel arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2210/00—Indexing scheme relating to optical transmission systems
    • H04B2210/003—Devices including multiple stages, e.g., multi-stage optical amplifiers or dispersion compensators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)
DE69228393T 1991-11-08 1992-11-04 Faseroptischer Verstärker Expired - Fee Related DE69228393T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP29286591A JP3137391B2 (ja) 1991-11-08 1991-11-08 ファイバ形光増幅器
JP3184692A JPH05235442A (ja) 1992-02-19 1992-02-19 光増幅器
JP8551892A JP3010897B2 (ja) 1992-04-07 1992-04-07 光中継装置
JP4162786A JP3008673B2 (ja) 1992-06-22 1992-06-22 光増幅中継器の監視方式

Publications (2)

Publication Number Publication Date
DE69228393D1 true DE69228393D1 (de) 1999-03-18
DE69228393T2 DE69228393T2 (de) 1999-06-17

Family

ID=27459510

Family Applications (4)

Application Number Title Priority Date Filing Date
DE69231259T Expired - Lifetime DE69231259T2 (de) 1991-11-08 1992-11-04 Optisches Faserverstärkerrelaissystem
DE69231919T Expired - Lifetime DE69231919T2 (de) 1991-11-08 1992-11-04 Optisches Relaissystem mit Faserverstärkern
DE69220648T Expired - Fee Related DE69220648T2 (de) 1991-11-08 1992-11-04 Faseroptischer Verstärker
DE69228393T Expired - Fee Related DE69228393T2 (de) 1991-11-08 1992-11-04 Faseroptischer Verstärker

Family Applications Before (3)

Application Number Title Priority Date Filing Date
DE69231259T Expired - Lifetime DE69231259T2 (de) 1991-11-08 1992-11-04 Optisches Faserverstärkerrelaissystem
DE69231919T Expired - Lifetime DE69231919T2 (de) 1991-11-08 1992-11-04 Optisches Relaissystem mit Faserverstärkern
DE69220648T Expired - Fee Related DE69220648T2 (de) 1991-11-08 1992-11-04 Faseroptischer Verstärker

Country Status (3)

Country Link
US (1) US5367587A (de)
EP (5) EP0541061B1 (de)
DE (4) DE69231259T2 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9217706D0 (en) * 1992-08-20 1992-09-30 Bt & D Technologies Ltd Multistage fibre amplifier
JPH06318754A (ja) * 1993-05-10 1994-11-15 Matsushita Electric Ind Co Ltd 光ファイバ増幅器および光信号伝送システム
JP3247919B2 (ja) * 1993-07-19 2002-01-21 三菱電機株式会社 光増幅装置
GB2280560B (en) * 1993-07-31 1997-09-03 Northern Telecom Ltd Communications system
JPH07176813A (ja) * 1993-12-17 1995-07-14 Fujitsu Ltd 光ファイバ増幅器
DE4409444A1 (de) * 1994-03-19 1995-09-21 Sel Alcatel Ag Optisch gepumpter bistabiler Laser
JP3250428B2 (ja) * 1995-09-28 2002-01-28 三菱電機株式会社 光増幅装置
US5808770A (en) * 1995-12-29 1998-09-15 Lucent Technologies, Inc. Method and apparatus for using on-off-keying using laser relaxation oscillation
JP3730299B2 (ja) * 1996-02-07 2005-12-21 富士通株式会社 光等化増幅器および光等化増幅方法
CA2172873C (en) * 1996-03-28 2002-03-12 Kim Byron Roberts Method of determining optical amplifier failures
GB2354367B (en) * 1996-06-26 2001-04-25 Fujitsu Ltd Method of and apparatus for controlling an optical amplifier
JPH1012954A (ja) 1996-06-26 1998-01-16 Fujitsu Ltd 光増幅器
JP3652804B2 (ja) 1996-09-06 2005-05-25 富士通株式会社 光伝送装置
JP3327148B2 (ja) * 1996-11-21 2002-09-24 ケイディーディーアイ株式会社 光増幅器及びレーザ光発生装置
US6211985B1 (en) * 1997-08-08 2001-04-03 Tyco Submarine Systems Ltd. Remote monitoring of an optical transmission system using line monitoring signals
US6327077B1 (en) * 1998-09-29 2001-12-04 Nec Corporation Optical direct amplifier device and bidirectionally pumped optical direct amplifier device
JP2000150992A (ja) * 1998-11-11 2000-05-30 Nec Corp 光増幅器
JP2001356377A (ja) * 2000-06-16 2001-12-26 Kdd Submarine Cable Systems Inc ポンプ光発生装置及びファイバラマン増幅器
US20030011878A1 (en) * 2001-07-11 2003-01-16 Maas Steven J. Remote pumping of optical amplifier system and method
US20030081307A1 (en) * 2001-09-28 2003-05-01 Fludger Christopher R. Raman amplification
US7245423B1 (en) 2006-07-24 2007-07-17 Itt Manufacturing Enterprises, Inc. Reducing noise in a fiber amplifier using a cleaning optical signal
WO2009141449A2 (de) * 2008-05-21 2009-11-26 Silicon Line Gmbh Schaltungsanordnung und verfahren zum ansteuern lichtemittierender bauelemente
JP5614327B2 (ja) * 2011-02-24 2014-10-29 日本電気株式会社 光増幅器制御装置
EP3439201B1 (de) 2016-03-30 2022-03-16 Nec Corporation Signal-loopback-schaltung und signal-loopback-verfahren
EP3817161A4 (de) * 2018-06-28 2021-09-01 NEC Corporation Lichtquellenvorrichtung und optischer verstärker

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3167165D1 (en) * 1980-06-16 1984-12-20 Post Office Digital transmission systems
JPS59101629A (ja) * 1982-12-01 1984-06-12 Nec Corp ファイバ内光増幅装置
JPS59200486A (ja) * 1983-04-27 1984-11-13 Nippon Telegr & Teleph Corp <Ntt> 光フアイバによる光増幅装置
JPS6035344A (ja) * 1983-08-08 1985-02-23 Hitachi Tobu Semiconductor Ltd 発光装置およびこれを用いた光学的信号処理装置
US4554510A (en) * 1983-09-12 1985-11-19 The Board Of Trustees Of Leland Stanford Junior University Switching fiber optic amplifier
JPS61133688A (ja) * 1984-12-03 1986-06-20 Fujitsu Ltd 半導体レ−ザ波長制御装置
JPH0738474B2 (ja) 1989-03-15 1995-04-26 国際電信電話株式会社 ポンピング光用光源の冗長方式
US5005937A (en) * 1989-04-14 1991-04-09 Nippon Telegraph And Telephone Corporation Optical branching equipment and optical network using the same
CA2019253C (en) * 1989-06-23 1994-01-11 Shinya Inagaki Optical fiber amplifier
JP3137632B2 (ja) * 1989-08-31 2001-02-26 富士通株式会社 光ファイバ増幅器を備えた光通信方式
US5058974A (en) * 1989-10-06 1991-10-22 At&T Bell Laboratories Distributed amplification for lightwave transmission system
JPH03127886A (ja) * 1989-10-13 1991-05-30 Mitsubishi Cable Ind Ltd 光増幅器
JP2951985B2 (ja) 1990-01-19 1999-09-20 日本電信電話株式会社 光中継器の監視信号転送装置
JPH03215982A (ja) * 1990-01-19 1991-09-20 Mitsubishi Electric Corp ファイバ形光増幅器
DE4005867A1 (de) * 1990-02-24 1991-08-29 Standard Elektrik Lorenz Ag Faseroptischer verstaerker
US5015054A (en) * 1990-02-26 1991-05-14 The United States Of America As Represented By The Department Of Energy Apparatus and method for increasing the bandwidth of a laser beam
JPH0834454B2 (ja) * 1990-03-01 1996-03-29 国際電信電話株式会社 光中継器の監視方式
CA2037350C (en) * 1990-03-02 1994-11-08 Kenichi Abe Optical coupler
DE4006867A1 (de) * 1990-03-05 1991-09-12 Reutlinger & Soehne Gmbh U Co Vorrichtung zum eindrehen eines wuchtkoerpers in eine bearbeitungsposition
US5229876A (en) * 1990-03-26 1993-07-20 At&T Bell Laboratories Telemetry for optical fiber amplifier repeater
US5115338A (en) * 1990-05-30 1992-05-19 At&T Bell Laboratories Multi-stage optical amplifier
US5216728A (en) * 1991-06-14 1993-06-01 Corning Incorporated Optical fiber amplifier with filter
US5187759A (en) * 1991-11-07 1993-02-16 At&T Bell Laboratories High gain multi-mode optical amplifier

Also Published As

Publication number Publication date
DE69220648D1 (de) 1997-08-07
EP0652613B1 (de) 1999-02-03
DE69231259D1 (de) 2000-08-17
EP0712217A3 (de) 1996-08-07
EP0778682B1 (de) 2000-07-12
EP0541061A3 (de) 1994-01-12
DE69231919T2 (de) 2002-04-04
EP0778682A2 (de) 1997-06-11
EP0652613A3 (de) 1995-08-16
EP0541061B1 (de) 1997-07-02
DE69228393T2 (de) 1999-06-17
EP0768766A3 (de) 1998-01-21
EP0768766A2 (de) 1997-04-16
EP0541061A2 (de) 1993-05-12
DE69231259T2 (de) 2001-01-04
DE69231919D1 (de) 2001-08-09
EP0768766B1 (de) 2001-07-04
EP0712217A2 (de) 1996-05-15
EP0778682A3 (de) 1997-10-22
US5367587A (en) 1994-11-22
DE69220648T2 (de) 1997-12-18
EP0652613A2 (de) 1995-05-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee