DE69634235D1 - Optischer Verstärker - Google Patents

Optischer Verstärker

Info

Publication number
DE69634235D1
DE69634235D1 DE69634235T DE69634235T DE69634235D1 DE 69634235 D1 DE69634235 D1 DE 69634235D1 DE 69634235 T DE69634235 T DE 69634235T DE 69634235 T DE69634235 T DE 69634235T DE 69634235 D1 DE69634235 D1 DE 69634235D1
Authority
DE
Germany
Prior art keywords
optical amplifier
amplifier
optical
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 - Lifetime
Application number
DE69634235T
Other languages
English (en)
Other versions
DE69634235T2 (de
Inventor
Hiroshi Onaka
Hideyuki Miyata
Kazue Otsuka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69634235D1 publication Critical patent/DE69634235D1/de
Application granted granted Critical
Publication of DE69634235T2 publication Critical patent/DE69634235T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B10/29—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
    • H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
    • H04B10/296—Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
    • 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
    • H01S3/10—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
    • 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
    • H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
    • 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
    • H04B10/2931—Signal power control using AGC
    • 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
    • H04B10/294—Signal power control in a multiwavelength system, e.g. gain equalisation
    • H04B10/2942—Signal power control in a multiwavelength system, e.g. gain equalisation using automatic gain control [AGC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0221—Power control, e.g. to keep the total optical power constant
    • 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
    • H01S2301/00—Functional characteristics
    • H01S2301/04—Gain spectral shaping, flattening
    • 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
    • H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers
    • H01S3/10015—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical amplifiers by monitoring or controlling, e.g. attenuating, the input signal
    • 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
DE69634235T 1995-11-29 1996-11-27 Optischer Verstärker Expired - Lifetime DE69634235T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP31121295 1995-11-29
JP31121295A JP3739453B2 (ja) 1995-11-29 1995-11-29 光増幅器及び該光増幅器を備えた光通信システム

Publications (2)

Publication Number Publication Date
DE69634235D1 true DE69634235D1 (de) 2005-03-03
DE69634235T2 DE69634235T2 (de) 2006-01-05

Family

ID=18014458

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69638125T Expired - Lifetime DE69638125D1 (de) 1995-11-29 1996-11-27 Optischer Verstärker und optisches Übertragungssystem unter Verwendung dieses Verstärkers
DE69634235T Expired - Lifetime DE69634235T2 (de) 1995-11-29 1996-11-27 Optischer Verstärker

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69638125T Expired - Lifetime DE69638125D1 (de) 1995-11-29 1996-11-27 Optischer Verstärker und optisches Übertragungssystem unter Verwendung dieses Verstärkers

Country Status (4)

Country Link
US (1) US6067187A (de)
EP (3) EP0777346B1 (de)
JP (1) JP3739453B2 (de)
DE (2) DE69638125D1 (de)

Families Citing this family (52)

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US6025947A (en) 1996-05-02 2000-02-15 Fujitsu Limited Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied
JPH09321701A (ja) 1996-05-31 1997-12-12 Fujitsu Ltd 光通信システム及び光増幅器
CN1216641A (zh) * 1996-12-20 1999-05-12 西门子公司 用于波长复用的光纤放大器
KR100219719B1 (ko) * 1997-07-15 1999-09-01 윤종용 감시가능한 파장분할다중화 광증폭기 제어시스템 및 그 제어방법
JP3522509B2 (ja) * 1997-10-17 2004-04-26 富士通株式会社 光伝送装置及び光通信システム
JPH11122192A (ja) * 1997-10-17 1999-04-30 Fujitsu Ltd 光増幅器及び該光増幅器を備えた光通信システム
EP1034629B1 (de) * 1997-11-28 2003-02-05 Siemens Aktiengesellschaft Verfahren zur pegeleinstellung für optische signale
JP3050304B2 (ja) * 1997-12-04 2000-06-12 日本電気株式会社 光ａｄｍ装置
EP0933894B1 (de) * 1998-01-27 2007-07-25 Lucent Technologies Inc. Verfahren und Vorrichtung zur Steuerung der optischen Verstärkung in einer optischen Wellenlängenmultiplexübertragung
SE522622C2 (sv) * 1998-04-01 2004-02-24 Ericsson Telefon Ab L M Optisk fiberförstärkare med styrd förstärkning
KR100316308B1 (ko) * 1998-10-07 2002-02-19 윤종용 채널당출력파워가일정한파장분할다중화광섬유증폭기
KR100314673B1 (ko) * 1998-10-13 2002-02-19 서평원 파장분할다중방식의양방향광증폭장치및광이득조절방법
KR100416439B1 (ko) * 1998-11-24 2004-03-30 삼성전자주식회사 이득평탄도를제어하는광섬유증폭기
KR100283956B1 (ko) * 1998-11-24 2001-04-02 윤종용 채널별 출력세기가 일정한 광섬유증폭기 및 그 증폭방법
US6580549B1 (en) * 1999-02-05 2003-06-17 Fujitsu Limited Wavelength-multiplexed light amplifying apparatus, optical amplifier and optical add-and-drop apparatus using wavelength-multiplexed light amplifying basic unit
JP2000299518A (ja) 1999-02-10 2000-10-24 Oki Electric Ind Co Ltd 光ファイバ増幅器及びその制御方法
JP3844902B2 (ja) * 1999-03-02 2006-11-15 富士通株式会社 波長多重用光増幅器及び光通信システム
JP2000269578A (ja) * 1999-03-18 2000-09-29 Fujitsu Ltd 光増幅のための方法、装置及びシステム
JP4204693B2 (ja) * 1999-03-31 2009-01-07 三菱電機株式会社 光増幅装置
JP2000312185A (ja) * 1999-04-28 2000-11-07 Nec Corp 波長多重光伝送用光中継増幅器およびこれを用いた波長多重光伝送装置
US6657778B1 (en) * 1999-07-30 2003-12-02 Mitsubishi Denkikabushiki Kaisha Optical amplification repeater and optical amplification repeating and transmitting system
US6366393B1 (en) * 1999-08-25 2002-04-02 Lucent Technologies Inc. Fast gain control for optical amplifiers
JP2001111495A (ja) * 1999-10-04 2001-04-20 Fujitsu Ltd 光分岐・挿入装置およびその制御方法
EP1128504B8 (de) * 2000-02-23 2009-08-12 Fujitsu Limited Optischer Verstärker
JP4689015B2 (ja) * 2000-08-14 2011-05-25 富士通株式会社 光増幅装置および光増幅方法ならびに光通信システム
KR100346221B1 (ko) * 2000-09-06 2002-08-01 삼성전자 주식회사 어븀첨가 광섬유 증폭기의 이득 제어 장치 및 방법
US6900931B1 (en) * 2000-10-02 2005-05-31 Ciena Corporation Three-stage optical amplifier having flat spectral gain
JP2002198598A (ja) * 2000-12-22 2002-07-12 Nec Corp 光増幅利得制御回路および光増幅利得制御方法
JP2002198599A (ja) 2000-12-22 2002-07-12 Nec Corp 光増幅器および光増幅方法
KR100358184B1 (ko) * 2000-12-27 2002-10-25 주식회사 케이티 광섬유 증폭 장치의 펌프 광원 제어 장치 및 그를 이용한하이브리드형 광섬유 증폭 장치
JP3904835B2 (ja) * 2001-01-29 2007-04-11 株式会社日立製作所 光増幅器、光ファイバラマン光増幅器、及び光システム
US7106969B1 (en) * 2001-02-12 2006-09-12 Atrica Israel Ltd. Optical network terminator
US6421168B1 (en) 2001-07-31 2002-07-16 Seneca Networks Reduction of ASE in WDM optical ring networks
US6388802B1 (en) 2001-07-31 2002-05-14 Seneca Networks Reduction of ASE in WDM optical ring networks
JP3784691B2 (ja) * 2001-10-30 2006-06-14 富士通株式会社 伝送特性補償制御システム
JP3986824B2 (ja) * 2001-12-28 2007-10-03 富士通株式会社 光フィルタの制御方法及び制御装置並びに光ノード装置
US7042634B2 (en) * 2002-03-14 2006-05-09 Nippon Telegraph And Telephone Corporation Optical amplifier
JPWO2004045116A1 (ja) * 2002-11-13 2006-03-16 富士通株式会社 光信号のパワーを適切に調節する装置
US20050135814A1 (en) * 2003-12-17 2005-06-23 Stephen Courtney Apparatus and method for simulating a length of optical fiber
JP4484565B2 (ja) 2004-03-30 2010-06-16 富士通株式会社 チルト補償機能を有する多段光増幅器
US7711013B2 (en) * 2004-03-31 2010-05-04 Imra America, Inc. Modular fiber-based chirped pulse amplification system
AU2005285414B2 (en) * 2004-08-11 2010-04-15 Subcom, Llc System and method for spectral loading an optical transmission system
EP1876737A1 (de) 2006-07-06 2008-01-09 Alcatel Lucent Gesteuerte optische Verstärkervorrichtung und entsprechendes Verfahren zu ihrer Rückkopplungssteuerung
US7362498B1 (en) 2006-12-28 2008-04-22 General Instrument Corporation Method and apparatus for controlling a semiconductor optical amplifier for use in a passive optical network
IL187836A0 (en) * 2007-12-03 2008-03-20 Eci Telecom Ltd Technique for generating multilevel coded optical signals
US8730569B2 (en) * 2009-11-05 2014-05-20 Nec Corporation Light power control system, light power control node apparatus, and method of controlling light power
JP2012039136A (ja) * 2011-10-03 2012-02-23 Furukawa Electric Co Ltd:The 光伝送装置
WO2015172328A1 (zh) * 2014-05-14 2015-11-19 华为海洋网络有限公司 一种光中继器，及光纤通信系统
JP2016208276A (ja) 2015-04-22 2016-12-08 富士通株式会社 プローブ発生装置、光伝送装置及びプローブ発生方法
CZ306846B6 (cs) 2015-05-04 2017-08-09 CESNET, zájmové sdružení právnických osob Modulární stavebnice spektrálně flexibilního zařízení pro obousměrné přenosy optických signálů citlivých na časování v Internetu a jiných sítích
CN106303765B (zh) * 2015-05-26 2019-03-15 中兴通讯股份有限公司 一种分布式自动功率优化系统及方法
CZ306141B6 (cs) * 2015-06-18 2016-08-17 CESNET, zájmové sdružení právnických osob Modulární stavebnice zařízení pro monitoring spektrálního odstupu dvou kanálů v sítích optických vlnových multiplexů

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Also Published As

Publication number Publication date
EP1675284A3 (de) 2008-03-26
EP1427119A3 (de) 2005-10-19
EP1675284A2 (de) 2006-06-28
EP0777346A3 (de) 1999-08-11
US6067187A (en) 2000-05-23
DE69638125D1 (de) 2010-03-25
EP0777346B1 (de) 2005-01-26
EP1427119A2 (de) 2004-06-09
EP0777346A2 (de) 1997-06-04
EP1427119B1 (de) 2010-02-10
JPH09153865A (ja) 1997-06-10
DE69634235T2 (de) 2006-01-05
JP3739453B2 (ja) 2006-01-25

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