WO2009078435A1 - 外部変調器の制御装置及び制御方法 - Google Patents

外部変調器の制御装置及び制御方法 Download PDF

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Publication number
WO2009078435A1
WO2009078435A1 PCT/JP2008/072971 JP2008072971W WO2009078435A1 WO 2009078435 A1 WO2009078435 A1 WO 2009078435A1 JP 2008072971 W JP2008072971 W JP 2008072971W WO 2009078435 A1 WO2009078435 A1 WO 2009078435A1
Authority
WO
WIPO (PCT)
Prior art keywords
low frequency
frequency signal
external modulator
signal
output
Prior art date
Application number
PCT/JP2008/072971
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 JP2009545757A priority Critical patent/JPWO2009078435A1/ja
Publication of WO2009078435A1 publication Critical patent/WO2009078435A1/ja

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Classifications

    • 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 
    • G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
    • G02F1/0123—Circuits for the control or stabilisation of the bias voltage, e.g. automatic bias control [ABC] feedback loops
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Semiconductor Lasers (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、前記光源の出力を制御する光出力制御手段と;所定の周波数を有する低周波信号を生成して、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前記低周波信号の位相とを比較し、その位相差情報を出力する低周波信号検出手段と;前記光出力制御手段によって、前記外部変調器の出力が所定の目標値以下となるように前記光源の出力が制御されているときに、前記位相差情報に基づいて前記外部変調器の動作点の引き込み制御を行う動作点制御手段と;を有する。
PCT/JP2008/072971 2007-12-17 2008-12-17 外部変調器の制御装置及び制御方法 WO2009078435A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009545757A JPWO2009078435A1 (ja) 2007-12-17 2008-12-17 外部変調器の制御装置及び制御方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007324719 2007-12-17
JP2007-324719 2007-12-17

Publications (1)

Publication Number Publication Date
WO2009078435A1 true WO2009078435A1 (ja) 2009-06-25

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ID=40795548

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PCT/JP2008/072971 WO2009078435A1 (ja) 2007-12-17 2008-12-17 外部変調器の制御装置及び制御方法

Country Status (2)

Country Link
JP (1) JPWO2009078435A1 (ja)
WO (1) WO2009078435A1 (ja)

Cited By (3)

* 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
JP5006978B1 (ja) * 2011-03-30 2012-08-22 株式会社フジクラ 補償方法、光変調システム、及び光復調システム
WO2013114628A1 (ja) * 2012-02-03 2013-08-08 富士通株式会社 光送信器および光変調器のバイアス制御方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03251815A (ja) * 1990-03-01 1991-11-11 Fujitsu Ltd 光送信器、光変調器の制御回路および光変調方法
JP2006121368A (ja) * 2004-10-21 2006-05-11 Fujitsu Ltd 光送信装置
JP2007123747A (ja) * 2005-10-31 2007-05-17 Mitsubishi Electric Corp 光送信器
JP2007206380A (ja) * 2006-02-02 2007-08-16 Yokogawa Electric Corp 光変調装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03251815A (ja) * 1990-03-01 1991-11-11 Fujitsu Ltd 光送信器、光変調器の制御回路および光変調方法
JP2006121368A (ja) * 2004-10-21 2006-05-11 Fujitsu Ltd 光送信装置
JP2007123747A (ja) * 2005-10-31 2007-05-17 Mitsubishi Electric Corp 光送信器
JP2007206380A (ja) * 2006-02-02 2007-08-16 Yokogawa Electric Corp 光変調装置

Cited By (8)

* 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
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
JP5006978B1 (ja) * 2011-03-30 2012-08-22 株式会社フジクラ 補償方法、光変調システム、及び光復調システム
WO2012132112A1 (ja) * 2011-03-30 2012-10-04 株式会社フジクラ 補償方法、光変調システム、及び光復調システム
US8493647B2 (en) 2011-03-30 2013-07-23 Fujikura Ltd. Compensation method, optical modulation system, and optical demodulation system
WO2013114628A1 (ja) * 2012-02-03 2013-08-08 富士通株式会社 光送信器および光変調器のバイアス制御方法
JPWO2013114628A1 (ja) * 2012-02-03 2015-05-11 富士通株式会社 光送信器および光変調器のバイアス制御方法
US9350455B2 (en) 2012-02-03 2016-05-24 Fujitsu Limited Optical transmitter and bias control method of optical modulator

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Publication number Publication date
JPWO2009078435A1 (ja) 2011-04-28

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