FR2313691A1 - Sensitive magneto-optical transducer - has optical fibres surrounding electric conductor so that linearly polarised light is rotated in plane in accordance with current - Google Patents

Sensitive magneto-optical transducer - has optical fibres surrounding electric conductor so that linearly polarised light is rotated in plane in accordance with current

Info

Publication number
FR2313691A1
FR2313691A1 FR7617150A FR7617150A FR2313691A1 FR 2313691 A1 FR2313691 A1 FR 2313691A1 FR 7617150 A FR7617150 A FR 7617150A FR 7617150 A FR7617150 A FR 7617150A FR 2313691 A1 FR2313691 A1 FR 2313691A1
Authority
FR
France
Prior art keywords
optical
plane
rotated
accordance
current
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.)
Granted
Application number
FR7617150A
Other languages
French (fr)
Other versions
FR2313691B3 (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.)
General Electric Co PLC
General Electric Co
Original Assignee
General Electric Co PLC
General Electric Co
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 GB2430575A external-priority patent/GB1552124A/en
Application filed by General Electric Co PLC, General Electric Co filed Critical General Electric Co PLC
Publication of FR2313691A1 publication Critical patent/FR2313691A1/en
Application granted granted Critical
Publication of FR2313691B3 publication Critical patent/FR2313691B3/fr
Granted 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 
    • G02F1/09—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
    • G02F1/095—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 in an optical waveguide structure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/245—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect
    • G01R15/246—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect based on the Faraday, i.e. linear magneto-optic, effect

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

The magneto-optical transducer rotates the optical polarisation plane in accordance with an electric current. A winding of optical fibres (3) surrounds an electric conductor (1). The optical fibres are such, that linearly polarised light carried by them is rotated in a plane in the presence of a magnetic field parallel to the fibres. The fibre winding is so arranged, that an unambiguous relation exists between the current intensity in the conductor (1) and the angle between polarisation planes of the light entering and leaving the fibres.
FR7617150A 1975-06-05 1976-06-04 Sensitive magneto-optical transducer - has optical fibres surrounding electric conductor so that linearly polarised light is rotated in plane in accordance with current Granted FR2313691A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2430575A GB1552124A (en) 1975-06-05 1975-06-05 Magneto-optical transducers and circuits employing them
GB2692275 1975-06-25

Publications (2)

Publication Number Publication Date
FR2313691A1 true FR2313691A1 (en) 1976-12-31
FR2313691B3 FR2313691B3 (en) 1979-02-23

Family

ID=26257045

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7617150A Granted FR2313691A1 (en) 1975-06-05 1976-06-04 Sensitive magneto-optical transducer - has optical fibres surrounding electric conductor so that linearly polarised light is rotated in plane in accordance with current

Country Status (3)

Country Link
AU (1) AU1440676A (en)
DE (1) DE2624692A1 (en)
FR (1) FR2313691A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430112A1 (en) * 1978-06-27 1980-01-25 Licentia Gmbh HIGH VOLTAGE COUPLING SWITCH OR APPARATUS
CN103616649A (en) * 2013-12-02 2014-03-05 暨南大学 Magnetic field sensor sensitivity tuning method based on fiber bragg grating laser

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834098A1 (en) * 1978-08-03 1980-02-21 Siemens Ag METHOD FOR IMPROVING THE SIGNAL-NOISE RATIO WHEN TRANSFERRING POLARIZED LIGHT THROUGH A LIGHT-GUIDE FIBER
DE3010005C2 (en) * 1980-03-15 1988-09-29 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Optical fiber twisted in its longitudinal axis
JPS5724871A (en) * 1980-07-23 1982-02-09 Hitachi Ltd Magnetic field measuring apparatus employing optical fiber
DE3116149A1 (en) * 1981-04-23 1982-11-11 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen FIBER OPTICAL ARRANGEMENT FOR MEASURING THE STRENGTH OF AN ELECTRICAL CURRENT I USING THE FARADAY EFFECT
DE3341265A1 (en) * 1983-11-15 1985-05-23 Phönix Armaturen-Werke Bregel GmbH, 6000 Frankfurt MEASURING DEVICE
JPS613075A (en) * 1984-06-18 1986-01-09 Sumitomo Electric Ind Ltd Troubled section discrimination for transmission line
DE3923804A1 (en) * 1989-07-19 1991-01-31 Messwandler Bau Ag FIBER OPTICAL ARRANGEMENT FOR MEASURING THE STRENGTH OF AN ELECTRIC CURRENT
DE4304762A1 (en) * 1993-02-17 1994-08-18 Abb Research Ltd Sensor head for a fiber optic current measuring device
DE29711683U1 (en) * 1997-07-03 1998-11-05 Felten & Guilleaume Energietechnik AG, 51063 Köln Sensor arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430112A1 (en) * 1978-06-27 1980-01-25 Licentia Gmbh HIGH VOLTAGE COUPLING SWITCH OR APPARATUS
CN103616649A (en) * 2013-12-02 2014-03-05 暨南大学 Magnetic field sensor sensitivity tuning method based on fiber bragg grating laser

Also Published As

Publication number Publication date
AU1440676A (en) 1977-12-01
FR2313691B3 (en) 1979-02-23
DE2624692A1 (en) 1976-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse