WO2009072577A1 - 外部変調器の制御装置及び方法 - Google Patents

外部変調器の制御装置及び方法 Download PDF

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Publication number
WO2009072577A1
WO2009072577A1 PCT/JP2008/072084 JP2008072084W WO2009072577A1 WO 2009072577 A1 WO2009072577 A1 WO 2009072577A1 JP 2008072084 W JP2008072084 W JP 2008072084W WO 2009072577 A1 WO2009072577 A1 WO 2009072577A1
Authority
WO
WIPO (PCT)
Prior art keywords
low
frequency signal
signal
external modulator
output
Prior art date
Application number
PCT/JP2008/072084
Other languages
English (en)
French (fr)
Inventor
Yoshiharu Fujisaku
Original Assignee
Fujikura 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 Fujikura Ltd. filed Critical Fujikura Ltd.
Priority to CN2008801185120A priority Critical patent/CN101884004B/zh
Priority to JP2009522850A priority patent/JP4719811B2/ja
Publication of WO2009072577A1 publication Critical patent/WO2009072577A1/ja
Priority to US12/686,785 priority patent/US8243354B2/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
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
    • H04B10/50575—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the modulator DC bias
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference
    • G02F1/212—Mach-Zehnder type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/58—Arrangements comprising a monitoring photodetector
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/21—Thermal instability, i.e. DC drift, of an optical modulator; Arrangements or methods for the reduction thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Optical Communication System (AREA)

Abstract

　本発明の外部変調器の制御装置は、光源からの出射光を入力信号に基づいて変調する外部変調器の制御装置であって、所定の周波数を有する低周波信号を生成し、出力する低周波信号生成手段と；前記入力信号である第１の変調信号と前記低周波信号とを重畳させて第２の変調信号とし、この第２の変調信号を前記外部変調器に印加する信号重畳手段と；前記外部変調器の光出力から前記低周波信号成分を検出し、この検出した低周波信号の位相と前記低周波信号生成手段から出力される低周波信号の位相とを比較し、その位相差に応じた信号を出力する低周波信号検出手段と；前記低周波信号検出手段の出力信号に基づいて、前記外部変調器の動作点ドリフトを補償するように制御する動作点制御手段と；前記外部変調器の光出力の平均値を検出する光パワーレベル検出手段と；前記光パワーレベル検出手段の検出出力に基づいてゲインが設定されるように構成され、前記低周波信号検出手段の出力を増幅し、前記動作点制御手段に出力する可変利得増幅手段と；を有し、前記可変利得増幅手段のゲインは、前記外部変調器の出力側から前記動作点制御手段を介して前記外部変調器に至るループにおける閉ループゲインが一定になるように設定される。
PCT/JP2008/072084 2007-12-04 2008-12-04 外部変調器の制御装置及び方法 WO2009072577A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2008801185120A CN101884004B (zh) 2007-12-04 2008-12-04 外部调制器的控制设备和方法
JP2009522850A JP4719811B2 (ja) 2007-12-04 2008-12-04 外部変調器の制御装置及び方法
US12/686,785 US8243354B2 (en) 2007-12-04 2010-01-13 Control apparatus and method of external modulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007313474 2007-12-04
JP2007-313474 2007-12-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/686,785 Continuation US8243354B2 (en) 2007-12-04 2010-01-13 Control apparatus and method of external modulator

Publications (1)

Publication Number Publication Date
WO2009072577A1 true WO2009072577A1 (ja) 2009-06-11

Family

ID=40717754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/072084 WO2009072577A1 (ja) 2007-12-04 2008-12-04 外部変調器の制御装置及び方法

Country Status (4)

Country Link
US (1) US8243354B2 (ja)
JP (1) JP4719811B2 (ja)
CN (1) CN101884004B (ja)
WO (1) WO2009072577A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102193028A (zh) * 2010-03-05 2011-09-21 上海微电子装备有限公司 一种电光相位调制器谐振频率检测装置及检测方法
JP5273145B2 (ja) * 2008-06-20 2013-08-28 富士通オプティカルコンポーネンツ株式会社 光送信器及び光送信器の制御方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5853386B2 (ja) * 2010-12-16 2016-02-09 富士通オプティカルコンポーネンツ株式会社 光変調装置および光変調制御方法
CN103916193B (zh) * 2014-03-19 2016-10-05 绍兴中科通信设备有限公司 一种调制器双臂可独立调制的光收发模块

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004077513A (ja) * 2002-08-09 2004-03-11 Sumitomo Osaka Cement Co Ltd 外部光変調器の動作点／光出力安定化方法及び装置
JP2006314003A (ja) * 2005-05-09 2006-11-16 Nec Engineering Ltd 光送信装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2642499B2 (ja) * 1990-03-01 1997-08-20 富士通株式会社 光送信器、光変調器の制御回路および光変調方法
JP2697639B2 (ja) * 1994-11-04 1998-01-14 日本電気株式会社 光変調装置
JP2677234B2 (ja) * 1995-03-17 1997-11-17 日本電気株式会社 光変調装置
JP3739341B2 (ja) * 2002-06-21 2006-01-25 ユーディナデバイス株式会社 レーザ装置並びにその制御装置及び制御方法
JP2004118060A (ja) * 2002-09-27 2004-04-15 Oki Electric Ind Co Ltd 駆動装置
JP2004294827A (ja) * 2003-03-27 2004-10-21 Anritsu Corp 光変調器のバイアス電圧制御方法および光変調装置
JP4397358B2 (ja) * 2005-07-15 2010-01-13 富士通株式会社 光変調装置及び光変調器の制御方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004077513A (ja) * 2002-08-09 2004-03-11 Sumitomo Osaka Cement Co Ltd 外部光変調器の動作点／光出力安定化方法及び装置
JP2006314003A (ja) * 2005-05-09 2006-11-16 Nec Engineering Ltd 光送信装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5273145B2 (ja) * 2008-06-20 2013-08-28 富士通オプティカルコンポーネンツ株式会社 光送信器及び光送信器の制御方法
CN102193028A (zh) * 2010-03-05 2011-09-21 上海微电子装备有限公司 一种电光相位调制器谐振频率检测装置及检测方法
CN102193028B (zh) * 2010-03-05 2013-09-11 上海微电子装备有限公司 一种电光相位调制器谐振频率检测装置及检测方法

Also Published As

Publication number Publication date
JP4719811B2 (ja) 2011-07-06
US8243354B2 (en) 2012-08-14
CN101884004B (zh) 2012-10-10
US20100142025A1 (en) 2010-06-10
CN101884004A (zh) 2010-11-10
JPWO2009072577A1 (ja) 2011-04-28

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