FR2475220B1 - - Google Patents

Info

Publication number
FR2475220B1
FR2475220B1 FR8002225A FR8002225A FR2475220B1 FR 2475220 B1 FR2475220 B1 FR 2475220B1 FR 8002225 A FR8002225 A FR 8002225A FR 8002225 A FR8002225 A FR 8002225A FR 2475220 B1 FR2475220 B1 FR 2475220B1
Authority
FR
France
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
FR8002225A
Other languages
French (fr)
Other versions
FR2475220A1 (fr
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Priority to FR8002225A priority Critical patent/FR2475220A1/fr
Publication of FR2475220A1 publication Critical patent/FR2475220A1/fr
Application granted granted Critical
Publication of FR2475220B1 publication Critical patent/FR2475220B1/fr
Granted 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
    • G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
    • G01J9/04—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength by beating two waves of a same source but of different frequency and measuring the phase shift of the lower frequency obtained

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
FR8002225A 1980-02-01 1980-02-01 Dispositif de detection d'ondes electromagnetiques, typiquement lumineuses, en quadrature de phase avec balance heterodyne. application aux velocimetres doppler et gyrometres sagnac Granted FR2475220A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8002225A FR2475220A1 (fr) 1980-02-01 1980-02-01 Dispositif de detection d'ondes electromagnetiques, typiquement lumineuses, en quadrature de phase avec balance heterodyne. application aux velocimetres doppler et gyrometres sagnac

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8002225A FR2475220A1 (fr) 1980-02-01 1980-02-01 Dispositif de detection d'ondes electromagnetiques, typiquement lumineuses, en quadrature de phase avec balance heterodyne. application aux velocimetres doppler et gyrometres sagnac

Publications (2)

Publication Number Publication Date
FR2475220A1 FR2475220A1 (fr) 1981-08-07
FR2475220B1 true FR2475220B1 (enrdf_load_stackoverflow) 1982-12-03

Family

ID=9238105

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8002225A Granted FR2475220A1 (fr) 1980-02-01 1980-02-01 Dispositif de detection d'ondes electromagnetiques, typiquement lumineuses, en quadrature de phase avec balance heterodyne. application aux velocimetres doppler et gyrometres sagnac

Country Status (1)

Country Link
FR (1) FR2475220A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196416A (ja) * 1982-05-12 1983-11-15 Hitachi Cable Ltd 光フアイバレ−ザジヤイロ
JPS58215503A (ja) * 1982-06-09 1983-12-15 Sumitomo Electric Ind Ltd 光フアイバジヤイロの処理方式
DE3247014A1 (de) * 1982-12-18 1984-06-20 Standard Elektrik Lorenz Ag, 7000 Stuttgart Einrichtung zur messung der rotationsgeschwindigkeit
US4949345A (en) * 1989-06-30 1990-08-14 Microelectronics And Computer Technology Corporation Method and apparatus for reducing the effect of random polarization on the power/energy output of lasers
US5204866A (en) * 1990-10-15 1993-04-20 International Business Machines Corporation Bidirectional free-space optical bus for electronics systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006989A (en) * 1972-10-02 1977-02-08 Raytheon Company Laser gyroscope
DE2814476A1 (de) * 1978-04-04 1979-10-18 Siemens Ag Interferometer mit einer spule aus einem einmode-wellenleiter

Also Published As

Publication number Publication date
FR2475220A1 (fr) 1981-08-07

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Legal Events

Date Code Title Description
ST Notification of lapse