DE69125322D1 - Optisches Wellenlängen-Multiplex-Kommunikationssystem und dafür verwendbarer optischer Faserverstärker - Google Patents

Optisches Wellenlängen-Multiplex-Kommunikationssystem und dafür verwendbarer optischer Faserverstärker

Info

Publication number
DE69125322D1
DE69125322D1 DE69125322T DE69125322T DE69125322D1 DE 69125322 D1 DE69125322 D1 DE 69125322D1 DE 69125322 T DE69125322 T DE 69125322T DE 69125322 T DE69125322 T DE 69125322T DE 69125322 D1 DE69125322 D1 DE 69125322D1
Authority
DE
Germany
Prior art keywords
communication system
fiber amplifier
multiplex communication
wavelength multiplex
optical fiber
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
DE69125322T
Other languages
English (en)
Other versions
DE69125322T2 (de
Inventor
Masao Majima
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of DE69125322D1 publication Critical patent/DE69125322D1/de
Application granted granted Critical
Publication of DE69125322T2 publication Critical patent/DE69125322T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • 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
    • H01S5/00—Semiconductor lasers
    • H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
DE69125322T 1990-07-20 1991-07-19 Optisches Wellenlängen-Multiplex-Kommunikationssystem und dafür verwendbarer optischer Faserverstärker Expired - Fee Related DE69125322T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2193432A JP2787820B2 (ja) 1990-07-20 1990-07-20 波長多重光通信システム及びそこで用いられる光増幅装置

Publications (2)

Publication Number Publication Date
DE69125322D1 true DE69125322D1 (de) 1997-04-30
DE69125322T2 DE69125322T2 (de) 1997-08-14

Family

ID=16307885

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69125322T Expired - Fee Related DE69125322T2 (de) 1990-07-20 1991-07-19 Optisches Wellenlängen-Multiplex-Kommunikationssystem und dafür verwendbarer optischer Faserverstärker

Country Status (4)

Country Link
US (1) US5396360A (de)
EP (1) EP0467396B1 (de)
JP (1) JP2787820B2 (de)
DE (1) DE69125322T2 (de)

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US6301031B2 (en) * 1997-09-02 2001-10-09 Agere Systems Optoelectronics Guardian Corp. Method and apparatus for wavelength-channel tracking and alignment within an optical communications system
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EP0975103B1 (de) 1998-02-06 2006-08-09 Fujitsu Limited Optischer verstärker und verfahren zur steuerung der lichtquellenerregung von einem optischen verstärker
JPH11252047A (ja) * 1998-03-04 1999-09-17 Fujitsu Ltd 光波長多重システム、及びその端局
JP3532759B2 (ja) * 1998-03-11 2004-05-31 富士通株式会社 Ｗｄｍ通信システムにおける中継装置及び同装置の送信レベル制御方法
SE522622C2 (sv) 1998-04-01 2004-02-24 Ericsson Telefon Ab L M Optisk fiberförstärkare med styrd förstärkning
US6347104B1 (en) * 1999-02-04 2002-02-12 Genoa Corporation Optical signal power monitor and regulator
JP2001016170A (ja) 1999-06-28 2001-01-19 Nec Corp 光増幅中継器およびこれを用いた出力制御方式
US6366393B1 (en) * 1999-08-25 2002-04-02 Lucent Technologies Inc. Fast gain control for optical amplifiers
JP3338007B2 (ja) * 1999-09-10 2002-10-28 古河電気工業株式会社 光増幅器及び波長多重光通信システム
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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
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GB0108325D0 (en) * 2001-04-03 2001-05-23 Res Ventures Group Output power control of optical amplifier
US7239268B1 (en) * 2002-09-05 2007-07-03 The United States Of America As Represented By The Secretary Of The Army Method and apparatus for minimizing the number of power amplifiers required under multiple transmission conditions
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JP4762773B2 (ja) * 2006-04-03 2011-08-31 三菱電機株式会社 光伝送システム、端局装置及び中継装置
US7245423B1 (en) * 2006-07-24 2007-07-17 Itt Manufacturing Enterprises, Inc. Reducing noise in a fiber amplifier using a cleaning optical signal
JP5470859B2 (ja) * 2009-01-09 2014-04-16 富士通株式会社 光増幅器、制御回路、および光増幅器の制御方法
JP5473579B2 (ja) 2009-12-11 2014-04-16 キヤノン株式会社 静電容量型電気機械変換装置の制御装置、及び静電容量型電気機械変換装置の制御方法
JP5424847B2 (ja) 2009-12-11 2014-02-26 キヤノン株式会社 電気機械変換装置
JP5414546B2 (ja) 2010-01-12 2014-02-12 キヤノン株式会社 容量検出型の電気機械変換素子

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Also Published As

Publication number Publication date
JP2787820B2 (ja) 1998-08-20
EP0467396A3 (en) 1992-10-21
EP0467396A2 (de) 1992-01-22
JPH0478827A (ja) 1992-03-12
EP0467396B1 (de) 1997-03-26
US5396360A (en) 1995-03-07
DE69125322T2 (de) 1997-08-14

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Legal Events

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8339 Ceased/non-payment of the annual fee