DE3572043D1 - Improvements relating to modulators - Google Patents

Improvements relating to modulators

Info

Publication number
DE3572043D1
DE3572043D1 DE8585303056T DE3572043T DE3572043D1 DE 3572043 D1 DE3572043 D1 DE 3572043D1 DE 8585303056 T DE8585303056 T DE 8585303056T DE 3572043 T DE3572043 T DE 3572043T DE 3572043 D1 DE3572043 D1 DE 3572043D1
Authority
DE
Germany
Prior art keywords
modulators
improvements relating
relating
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.)
Expired
Application number
DE8585303056T
Other languages
English (en)
Inventor
Malcolm David Mckinnon Roe
Michael Ernest Hicks
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.)
Crosfield Electronics Ltd
Original Assignee
Crosfield Electronics 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
Priority claimed from GB848411079A external-priority patent/GB8411079D0/en
Priority claimed from GB848427912A external-priority patent/GB8427912D0/en
Application filed by Crosfield Electronics Ltd filed Critical Crosfield Electronics Ltd
Application granted granted Critical
Publication of DE3572043D1 publication Critical patent/DE3572043D1/de
Expired 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
    • 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
    • G02F1/0305—Constructional arrangements
    • G02F1/0322—Arrangements comprising two or more independently controlled crystals
DE8585303056T 1984-05-01 1985-04-30 Improvements relating to modulators Expired DE3572043D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848411079A GB8411079D0 (en) 1984-05-01 1984-05-01 Modulators
GB848427912A GB8427912D0 (en) 1984-11-05 1984-11-05 Matching beam modulators

Publications (1)

Publication Number Publication Date
DE3572043D1 true DE3572043D1 (en) 1989-09-07

Family

ID=26287672

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585303056T Expired DE3572043D1 (en) 1984-05-01 1985-04-30 Improvements relating to modulators

Country Status (3)

Country Link
US (1) US4716384A (de)
EP (1) EP0162617B1 (de)
DE (1) DE3572043D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0627913B2 (ja) * 1984-12-21 1994-04-13 ソニー株式会社 光変調装置
US4905065A (en) * 1987-05-12 1990-02-27 Advanced Micro Devices, Inc. High density dram trench capacitor isolation employing double epitaxial layers
JP2924136B2 (ja) * 1990-09-05 1999-07-26 ミノルタ株式会社 光記録装置
US5488503A (en) * 1995-02-09 1996-01-30 Hughes Aircraft Company Low-power, stabilized, photonic modulator system

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US30974A (en) * 1860-12-18 Shoe-tack
US2292166A (en) * 1939-06-20 1942-08-04 Rca Corp Electromechanical control system
US2357625A (en) * 1943-08-05 1944-09-05 United Aircraft Corp Engine testing apparatus
US3579145A (en) * 1969-03-21 1971-05-18 Bell Telephone Labor Inc Modulator stabilization circuits
US3787888A (en) * 1969-12-30 1974-01-22 Honeywell Inc Recording apparatus with beam intensity control means
US3875400A (en) * 1971-04-06 1975-04-01 Pao Yoh Han Intensity modulated optical carrier communication system
US3895317A (en) * 1971-04-29 1975-07-15 Rca Corp Control circuits
JPS49122990A (de) * 1973-03-27 1974-11-25
GB1492740A (en) * 1973-12-17 1977-11-23 Crosfield Electronics Ltd Preparation of half-tone images
DE2403501C3 (de) * 1974-01-25 1979-02-22 Fa. Carl Zeiss, 7920 Heidenheim Verfahren zur Regelung der Phasenanpassung einer kohärenten Sekundärstrahlung in einem nichtlinearen Kristall
US4022970A (en) * 1975-09-26 1977-05-10 Exxon Research And Engineering Company Facsimile receiver with improved FM demodulator
GB1523033A (en) * 1976-03-03 1978-08-31 Crosfield Electronics Ltd Image reproducing systems
GB1523032A (en) * 1976-03-03 1978-08-31 Crosfield Electronics Ltd Image reproducing apparatus
GB1522555A (en) * 1976-03-03 1978-08-23 Crosfield Electronics Ltd Beam splitter
JPS5845005B2 (ja) * 1976-09-14 1983-10-06 日本ビクター株式会社 光変調の変調度安定化装置
JPS5827891B2 (ja) * 1976-09-14 1983-06-13 日本ビクター株式会社 レ−ザ光束の安定化装置
GB1578047A (en) * 1976-11-22 1980-10-29 Hell Rudolf Gmbh Arrangement for the reproduction of screened continuous-toe pictures
US4456914A (en) * 1978-03-27 1984-06-26 Discovision Associates Method and apparatus for storing information on a storage medium
JPS56500545A (de) * 1979-04-26 1981-04-23
US4317236A (en) * 1980-02-25 1982-02-23 Bell Telephone Laboratories, Incorporated Laser digital transmitter
JPS56153488A (en) * 1980-04-28 1981-11-27 Mitsubishi Electric Corp Recording device
JPS5824119A (ja) * 1982-07-21 1983-02-14 Hitachi Ltd 光変調装置
JPS5986025A (ja) * 1982-11-10 1984-05-18 Fuji Photo Film Co Ltd 光量補正装置

Also Published As

Publication number Publication date
US4716384A (en) 1987-12-29
EP0162617B1 (de) 1989-08-02
EP0162617A1 (de) 1985-11-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee