NL183211C - Optische modulatie-inrichting. - Google Patents

Optische modulatie-inrichting.

Info

Publication number
NL183211C
NL183211C NLAANVRAGE7908526,A NL7908526A NL183211C NL 183211 C NL183211 C NL 183211C NL 7908526 A NL7908526 A NL 7908526A NL 183211 C NL183211 C NL 183211C
Authority
NL
Netherlands
Prior art keywords
modulation device
optical modulation
optical
modulation
Prior art date
Application number
NLAANVRAGE7908526,A
Other languages
English (en)
Other versions
NL7908526A (nl
NL183211B (nl
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of NL7908526A publication Critical patent/NL7908526A/nl
Publication of NL183211B publication Critical patent/NL183211B/nl
Application granted granted Critical
Publication of NL183211C publication Critical patent/NL183211C/nl

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/128—Modulators
    • 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)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
NLAANVRAGE7908526,A 1978-11-22 1979-11-22 Optische modulatie-inrichting. NL183211C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14589878 1978-11-22
JP53145898A JPS605926B2 (ja) 1978-11-22 1978-11-22 光変調装置

Publications (3)

Publication Number Publication Date
NL7908526A NL7908526A (nl) 1980-05-27
NL183211B NL183211B (nl) 1988-03-16
NL183211C true NL183211C (nl) 1988-08-16

Family

ID=15395599

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7908526,A NL183211C (nl) 1978-11-22 1979-11-22 Optische modulatie-inrichting.

Country Status (4)

Country Link
US (1) US4306142A (nl)
JP (1) JPS605926B2 (nl)
FR (1) FR2442460A1 (nl)
NL (1) NL183211C (nl)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468141B1 (fr) * 1979-10-23 1985-06-21 Mitsubishi Electric Corp Systeme de modulation electro-optique
NL186838C (nl) * 1979-10-25 1991-03-01 Mitsubishi Electric Corp Optische modulatie-inrichting.
FR2470397A1 (fr) * 1979-11-21 1981-05-29 Thomson Csf Attenuateur optique a attenuation controlee
JPS61239441A (ja) * 1985-04-16 1986-10-24 Olympus Optical Co Ltd 光学的記録再生装置
JPH01320473A (ja) * 1988-06-22 1989-12-26 Anritsu Corp 電気光学効果素子及びそれを用いた電気信号波形測定装置
US5003624A (en) * 1990-03-29 1991-03-26 Hughes Aircraft Company Automatic bias controller for electro-optic modulator
US5343324A (en) * 1991-11-15 1994-08-30 Amoco Corporation Bias control and method for electro-optic modulators
US6441940B1 (en) * 1998-10-09 2002-08-27 Agere Systems Guardian Corp. Wavelength stabilization of light emitting components
US7369290B1 (en) 2003-03-19 2008-05-06 Photonic Systems, Inc. Modulator bias control
US7630651B2 (en) * 2005-10-21 2009-12-08 Fujitsu Limited Method and apparatus for controlling bias point of optical transmitter
JP4935093B2 (ja) * 2006-02-02 2012-05-23 横河電機株式会社 光変調装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579145A (en) * 1969-03-21 1971-05-18 Bell Telephone Labor Inc Modulator stabilization circuits
US3780296A (en) * 1972-12-22 1973-12-18 Rca Ltd Automatic optical bias control for light modulators
CA1013854A (en) * 1973-02-20 1977-07-12 John S. Winslow Videodisc mastering system
US4071751A (en) * 1976-04-26 1978-01-31 Rca Limited Automatic optical bias control for light modulators
DE2637284C3 (de) * 1976-08-19 1980-02-14 Ernst Leitz Wetzlar Gmbh, 6300 Lahn- Wetzlar Verfahren und Anordnungen zur automatischen Parallaxebestimmung

Also Published As

Publication number Publication date
FR2442460B1 (nl) 1982-12-17
US4306142A (en) 1981-12-15
JPS605926B2 (ja) 1985-02-14
FR2442460A1 (fr) 1980-06-20
NL7908526A (nl) 1980-05-27
JPS5570812A (en) 1980-05-28
NL183211B (nl) 1988-03-16

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee