WO2008081538A1 - 光増幅器及びその異常検出方法 - Google Patents

光増幅器及びその異常検出方法 Download PDF

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Publication number
WO2008081538A1
WO2008081538A1 PCT/JP2006/326235 JP2006326235W WO2008081538A1 WO 2008081538 A1 WO2008081538 A1 WO 2008081538A1 JP 2006326235 W JP2006326235 W JP 2006326235W WO 2008081538 A1 WO2008081538 A1 WO 2008081538A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
light
optical amplification
error detection
external
Prior art date
Application number
PCT/JP2006/326235
Other languages
English (en)
French (fr)
Inventor
Kosuke Komaki
Yuji Tamura
Original Assignee
Fujitsu Limited
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 Limited filed Critical Fujitsu Limited
Priority to PCT/JP2006/326235 priority Critical patent/WO2008081538A1/ja
Priority to JP2008551998A priority patent/JP4962499B2/ja
Publication of WO2008081538A1 publication Critical patent/WO2008081538A1/ja
Priority to US12/489,956 priority patent/US7880960B2/en

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
    • H04B10/2933—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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0797—Monitoring line amplifier or line repeater equipment
    • 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
    • H01S3/2308—Amplifier arrangements, e.g. MOPA
    • H01S3/2316—Cascaded amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Lasers (AREA)
  • Optical Communication System (AREA)

Abstract

　光増幅器１は、入力光を増幅するための第１の光増幅部１０と、この第１の光増幅部１０の出力を減衰する可変光減衰部２０と、この可変光減衰部２０の出力を増幅する第２の光増幅部３０と、可変光減衰部２０による損失量を制御する損失量制御部５１と、を備え、可変光減衰部２０及び第２の光増幅部３０の間に外部減衰光媒体２２が挿入される。損失量制御部５１は、可変光減衰部２０による損失量を制御することにより外部減衰光媒体２２の光損失の変動を補償する。光増幅器１は、外部減衰光媒体２２と第２の光増幅部３０との間で検出される光レベルによって第１及び第２の光増幅部（１０、３０）の間における光損失の異常を検出する異常検出部（６１、６２）と、可変光減衰部２０と外部減衰光媒体２２との間で検出される光レベルが所定閾値レベルより低いとき、異常検出部（６１、６２）による異常検出を無効にする検出無効化部（７１、７２）と、を備える。
PCT/JP2006/326235 2006-12-28 2006-12-28 光増幅器及びその異常検出方法 WO2008081538A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2006/326235 WO2008081538A1 (ja) 2006-12-28 2006-12-28 光増幅器及びその異常検出方法
JP2008551998A JP4962499B2 (ja) 2006-12-28 2006-12-28 光増幅器及びその異常検出方法
US12/489,956 US7880960B2 (en) 2006-12-28 2009-06-23 Optical amplifier and abnormality detection method for the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/326235 WO2008081538A1 (ja) 2006-12-28 2006-12-28 光増幅器及びその異常検出方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/489,956 Continuation US7880960B2 (en) 2006-12-28 2009-06-23 Optical amplifier and abnormality detection method for the same

Publications (1)

Publication Number Publication Date
WO2008081538A1 true WO2008081538A1 (ja) 2008-07-10

Family

ID=39588229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/326235 WO2008081538A1 (ja) 2006-12-28 2006-12-28 光増幅器及びその異常検出方法

Country Status (3)

Country Link
US (1) US7880960B2 (ja)
JP (1) JP4962499B2 (ja)
WO (1) WO2008081538A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010258055A (ja) * 2009-04-22 2010-11-11 Fujitsu Ltd 光増幅器モジュール及び分散補償ファイバ損失検出方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8064771B2 (en) * 2005-06-30 2011-11-22 Infinera Corporation Active control loop for power control of optical channel groups
JP5245747B2 (ja) * 2008-11-18 2013-07-24 富士通株式会社 光増幅器および光受信モジュール
JP5699760B2 (ja) * 2011-04-04 2015-04-15 富士通株式会社 光増幅装置、光増幅装置の制御方法、光受信局及び光伝送システム
JP6070101B2 (ja) * 2012-11-19 2017-02-01 富士通株式会社 光増幅装置及び伝送システム

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1051057A (ja) * 1996-05-02 1998-02-20 Fujitsu Ltd 波長多重用光増幅装置及びその制御方法
WO1999040695A1 (fr) * 1998-02-06 1999-08-12 Fujitsu Limited Amplificateur optique, procede de commande de la source de lumiere d'excitation dans un amplificateur optique et procede de commande de l'amplificateur optique
WO2002021204A1 (en) * 2000-09-07 2002-03-14 Fujitsu Limited Optical amplifier using raman amplification
JP2003289166A (ja) * 2003-02-26 2003-10-10 Hitachi Ltd 光ファイバ増幅器および光伝送システム
JP2004096490A (ja) * 2002-08-30 2004-03-25 Furukawa Electric Co Ltd:The 光増幅方法およびその装置
JP2005192056A (ja) * 2003-12-26 2005-07-14 Sumitomo Electric Ind Ltd 光通信システムおよび遠隔励起光増幅モジュール

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6421167B1 (en) * 2000-03-03 2002-07-16 General Dynamics Advanced Technology Systems, Inc. Multiple function bandwidth management systems
JP4171641B2 (ja) 2002-06-14 2008-10-22 富士通株式会社 光増幅器及びその制御方法
EP1420491A3 (en) * 2002-11-18 2005-04-27 Fujitsu Limited Optical amplifier and optical amplifier control method
JP4717602B2 (ja) * 2005-11-16 2011-07-06 富士通株式会社 光増幅器
JP4336345B2 (ja) 2006-01-10 2009-09-30 古河電気工業株式会社 光増幅装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1051057A (ja) * 1996-05-02 1998-02-20 Fujitsu Ltd 波長多重用光増幅装置及びその制御方法
WO1999040695A1 (fr) * 1998-02-06 1999-08-12 Fujitsu Limited Amplificateur optique, procede de commande de la source de lumiere d'excitation dans un amplificateur optique et procede de commande de l'amplificateur optique
WO2002021204A1 (en) * 2000-09-07 2002-03-14 Fujitsu Limited Optical amplifier using raman amplification
JP2004096490A (ja) * 2002-08-30 2004-03-25 Furukawa Electric Co Ltd:The 光増幅方法およびその装置
JP2003289166A (ja) * 2003-02-26 2003-10-10 Hitachi Ltd 光ファイバ増幅器および光伝送システム
JP2005192056A (ja) * 2003-12-26 2005-07-14 Sumitomo Electric Ind Ltd 光通信システムおよび遠隔励起光増幅モジュール

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010258055A (ja) * 2009-04-22 2010-11-11 Fujitsu Ltd 光増幅器モジュール及び分散補償ファイバ損失検出方法
US8477030B2 (en) 2009-04-22 2013-07-02 Fujitsu Limited Optical amplifier module and dispersion compensation fiber loss detection method

Also Published As

Publication number Publication date
JPWO2008081538A1 (ja) 2010-04-30
US20090257115A1 (en) 2009-10-15
JP4962499B2 (ja) 2012-06-27
US7880960B2 (en) 2011-02-01

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