GB2006456B - Magneto-optical phase modulatiing devices - Google Patents

Magneto-optical phase modulatiing devices

Info

Publication number
GB2006456B
GB2006456B GB7837896A GB7837896A GB2006456B GB 2006456 B GB2006456 B GB 2006456B GB 7837896 A GB7837896 A GB 7837896A GB 7837896 A GB7837896 A GB 7837896A GB 2006456 B GB2006456 B GB 2006456B
Authority
GB
United Kingdom
Prior art keywords
modulatiing
magneto
devices
optical phase
optical
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
GB7837896A
Other versions
GB2006456A (en
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.)
Unisys Group Services Ltd
Original Assignee
Sperry Rand 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 Sperry Rand Ltd filed Critical Sperry Rand Ltd
Priority to GB7837896A priority Critical patent/GB2006456B/en
Publication of GB2006456A publication Critical patent/GB2006456A/en
Application granted granted Critical
Publication of GB2006456B publication Critical patent/GB2006456B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/58—Turn-sensitive devices without moving masses
    • G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
    • G01C19/66—Ring laser gyrometers
    • G01C19/68—Lock-in prevention
    • 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 
    • G02F1/09—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 magneto-optical elements, e.g. exhibiting Faraday effect

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Elements Other Than Lenses (AREA)
GB7837896A 1977-10-04 1978-09-23 Magneto-optical phase modulatiing devices Expired GB2006456B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7837896A GB2006456B (en) 1977-10-04 1978-09-23 Magneto-optical phase modulatiing devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4115177 1977-10-04
GB7837896A GB2006456B (en) 1977-10-04 1978-09-23 Magneto-optical phase modulatiing devices

Publications (2)

Publication Number Publication Date
GB2006456A GB2006456A (en) 1979-05-02
GB2006456B true GB2006456B (en) 1983-06-02

Family

ID=26264608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7837896A Expired GB2006456B (en) 1977-10-04 1978-09-23 Magneto-optical phase modulatiing devices

Country Status (1)

Country Link
GB (1) GB2006456B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195908A (en) * 1978-05-15 1980-04-01 Sperry Corporation Magnetic mirror for imparting non-reciprocal phase shift
GB2075210B (en) * 1980-04-29 1983-11-23 Sperry Ltd Magneto-optical phase-modulating device
DE3115906A1 (en) * 1981-04-21 1982-10-28 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln RING LASER
JPS5981570A (en) * 1982-11-01 1984-05-11 Hitachi Ltd Optical magnetic field measuring device
NL8403816A (en) * 1984-12-17 1986-07-16 Philips Nv MULTI-LAYER OPTICAL BUILDING ELEMENT.
GB8621510D0 (en) * 1986-09-06 1986-10-15 British Aerospace Ring laser gyroscopes
GB8728829D0 (en) * 1987-12-10 1988-01-27 British Aerospace Ring laser gyroscopes
US4968136A (en) * 1988-09-02 1990-11-06 Northrop Corporation Ring laser gyro and magnetic mirror therefor
GB9303574D0 (en) * 1993-02-23 1993-04-07 Laurie Peter C S A device for deriving a unilateral net force

Also Published As

Publication number Publication date
GB2006456A (en) 1979-05-02

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920923

728C Application made for restoration (sect. 28/1977)
728A Order made restoring the patent (sect. 28/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950923