JPS56153541A - Bias stabilizing device for light modulator - Google Patents

Bias stabilizing device for light modulator

Info

Publication number
JPS56153541A
JPS56153541A JP5724580A JP5724580A JPS56153541A JP S56153541 A JPS56153541 A JP S56153541A JP 5724580 A JP5724580 A JP 5724580A JP 5724580 A JP5724580 A JP 5724580A JP S56153541 A JPS56153541 A JP S56153541A
Authority
JP
Japan
Prior art keywords
output
light modulator
bias
given
incident
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.)
Granted
Application number
JP5724580A
Other languages
Japanese (ja)
Other versions
JPS6126139B2 (en
Inventor
Kanji Kayanuma
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP5724580A priority Critical patent/JPS56153541A/en
Publication of JPS56153541A publication Critical patent/JPS56153541A/en
Publication of JPS6126139B2 publication Critical patent/JPS6126139B2/ja
Granted legal-status Critical Current

Links

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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To achieve the excellent bias stabilization, by taking the output difference after level adjustment by the sampling corresponding to the horizontal synchronizing signal period of FM signal modulated with the video signal in the detected output of incident and transmitting light to the light modulator, as the bias voltage. CONSTITUTION:The incident laser beam LBi is given to the photoelectric converter PE1 via the semitransparent mirror 1 and transmits through the light modulator PM and it is incident to the photoelectric converter PE2 via the beam splitter 2. The sampling pulse corresponding to the horizontal synchronizing signal period of the video signal is given to terminals 9, 10 of the sample holding circuits SH1 and SH2, and the output of the circuit SH1 is inputted to the subtractor 8 via the level adjuster 7 to take difference between said output and the output of the circuit SH2, and is given to the light modulator PMOD as the bias. Even if the rate of interruption of light is changed according to the signal frequency, stable bias can be obtained.
JP5724580A 1980-04-30 1980-04-30 Bias stabilizing device for light modulator Granted JPS56153541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5724580A JPS56153541A (en) 1980-04-30 1980-04-30 Bias stabilizing device for light modulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5724580A JPS56153541A (en) 1980-04-30 1980-04-30 Bias stabilizing device for light modulator

Publications (2)

Publication Number Publication Date
JPS56153541A true JPS56153541A (en) 1981-11-27
JPS6126139B2 JPS6126139B2 (en) 1986-06-19

Family

ID=13050138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5724580A Granted JPS56153541A (en) 1980-04-30 1980-04-30 Bias stabilizing device for light modulator

Country Status (1)

Country Link
JP (1) JPS56153541A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5868250A (en) * 1981-10-19 1983-04-23 Teac Co Optical modulating device
JP2006126796A (en) * 2004-09-28 2006-05-18 Aisin Seiki Co Ltd Method of driving mach-zehnder light modulator, and light modulating device
JP2011118360A (en) * 2009-12-01 2011-06-16 Fujitsu Ltd Device and method for monitoring modulator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5868250A (en) * 1981-10-19 1983-04-23 Teac Co Optical modulating device
JP2006126796A (en) * 2004-09-28 2006-05-18 Aisin Seiki Co Ltd Method of driving mach-zehnder light modulator, and light modulating device
JP2011118360A (en) * 2009-12-01 2011-06-16 Fujitsu Ltd Device and method for monitoring modulator

Also Published As

Publication number Publication date
JPS6126139B2 (en) 1986-06-19

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