JPS56121013A - Light signal generator - Google Patents

Light signal generator

Info

Publication number
JPS56121013A
JPS56121013A JP2333780A JP2333780A JPS56121013A JP S56121013 A JPS56121013 A JP S56121013A JP 2333780 A JP2333780 A JP 2333780A JP 2333780 A JP2333780 A JP 2333780A JP S56121013 A JPS56121013 A JP S56121013A
Authority
JP
Japan
Prior art keywords
light
output
electro
optical
optical phase
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.)
Pending
Application number
JP2333780A
Other languages
Japanese (ja)
Inventor
Masakatsu Okada
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP2333780A priority Critical patent/JPS56121013A/en
Publication of JPS56121013A publication Critical patent/JPS56121013A/en
Pending 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 
    • G02F1/03—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  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0327—Operation of the cell; Circuit arrangements

Abstract

PURPOSE:To perform light reproduction, oscillation, etc., without using an electric signal generator, by constituting properly and arranging an electro-optical bistable circuit. CONSTITUTION:Laser beam 10 is caused to strike polarizer 1 and through optical phase plate 2, electro-optical crystal 3, analyzer 4, and beam splitters 5 and 5', output light 11 is obtained. Then, part of the output light of analyzer 4 is split by beam splitters 5 and 5' and both split light beams are detected by photodetectors 6 and 6', whose detection electric signals are supplied to the positive-side and negative-side input terminals of differential amplifier 7 via the time constant circuits consisting of resistances 8 and 8', and capacitors 9 and 9'. Further, its output is applied to electro-optical crystal 3. As a result, reproduced oscillation light can be obtained as light output 11 by adequately adjusting the optical phase difference of optical phase plate 2, the ratio between two detection electric signals, the amplification factor of amplifier 7, or the intensity of incident light 10.
JP2333780A 1980-02-28 1980-02-28 Light signal generator Pending JPS56121013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2333780A JPS56121013A (en) 1980-02-28 1980-02-28 Light signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2333780A JPS56121013A (en) 1980-02-28 1980-02-28 Light signal generator

Publications (1)

Publication Number Publication Date
JPS56121013A true JPS56121013A (en) 1981-09-22

Family

ID=12107766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2333780A Pending JPS56121013A (en) 1980-02-28 1980-02-28 Light signal generator

Country Status (1)

Country Link
JP (1) JPS56121013A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6347724A (en) * 1986-08-15 1988-02-29 Nec Corp Surface elastic wave oscillating circuit
JPH02115820A (en) * 1988-10-26 1990-04-27 A T R Koudenpa Tsushin Kenkyusho:Kk Method for switching oscillation, and digital control signal generator using method, and memory using nonlinear oscillation using method
JP2007086809A (en) * 2006-12-21 2007-04-05 Fujitsu Ltd Optical communication device and optical branching/inserting device
US7389054B2 (en) 1999-02-19 2008-06-17 Fujitsu Limited Optical communication apparatus and optical add/drop apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6347724A (en) * 1986-08-15 1988-02-29 Nec Corp Surface elastic wave oscillating circuit
JPH02115820A (en) * 1988-10-26 1990-04-27 A T R Koudenpa Tsushin Kenkyusho:Kk Method for switching oscillation, and digital control signal generator using method, and memory using nonlinear oscillation using method
US7389054B2 (en) 1999-02-19 2008-06-17 Fujitsu Limited Optical communication apparatus and optical add/drop apparatus
US7577368B2 (en) 1999-02-19 2009-08-18 Fujitsu Limited Optical communication apparatus and optical add/drop apparatus
US7953329B2 (en) 1999-02-19 2011-05-31 Fujitsu Limited Optical communication apparatus and optical add/drop apparatus
US8521039B2 (en) 1999-02-19 2013-08-27 Fujitsu Limited Optical communication apparatus and optical add/drop apparatus
JP2007086809A (en) * 2006-12-21 2007-04-05 Fujitsu Ltd Optical communication device and optical branching/inserting device
JP4673285B2 (en) * 2006-12-21 2011-04-20 富士通株式会社 Optical communication device and optical add / drop device

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