WO2002075249A3 - Verfahren und einrichtung zur strommessung mittels eines faseroptischen in-line-sagnac-interferometers und dafür geeigneter phasenmodulator - Google Patents

Verfahren und einrichtung zur strommessung mittels eines faseroptischen in-line-sagnac-interferometers und dafür geeigneter phasenmodulator Download PDF

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Publication number
WO2002075249A3
WO2002075249A3 PCT/EP2002/002906 EP0202906W WO02075249A3 WO 2002075249 A3 WO2002075249 A3 WO 2002075249A3 EP 0202906 W EP0202906 W EP 0202906W WO 02075249 A3 WO02075249 A3 WO 02075249A3
Authority
WO
WIPO (PCT)
Prior art keywords
phase modulator
optic
fibre
current measurement
sagnac interferometer
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.)
Ceased
Application number
PCT/EP2002/002906
Other languages
English (en)
French (fr)
Other versions
WO2002075249A2 (de
Inventor
Sven Voigt
Guenter Spahlinger
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.)
Northrop Grumman Litef GmbH
Original Assignee
Litef GmbH
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 Litef GmbH filed Critical Litef GmbH
Priority to US10/471,923 priority Critical patent/US7102757B2/en
Priority to EP02724238A priority patent/EP1368667B1/de
Publication of WO2002075249A2 publication Critical patent/WO2002075249A2/de
Publication of WO2002075249A3 publication Critical patent/WO2002075249A3/de
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gyroscopes (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

Eine Einrichtung (20) zur Strommessung auf Basis eines faseroptischen In-Line-Sagnac-Interferometers, das einen Doppelbrechungs-Phasenmodulator (24) zur nichtreziproken Phasenmodulation zweier orthogonaler Polarisationsmoden eines das Interferometer durchsetzenden Lichtstrahls aufweist, zeichnet sich dadurch aus, dass der Phasenmodulator ein digitaler Phasenmodulator (24) ist. Von Vorteil ist hierbei, dass der Phasenmodulator (24) direkt digital ansteuerbar ist, was eine Vereinfachung einer entsprechenden Signalverarbeitungs- bzw. Ansteuerelektronik (32) erlaubt.
PCT/EP2002/002906 2001-03-16 2002-03-15 Verfahren und einrichtung zur strommessung mittels eines faseroptischen in-line-sagnac-interferometers und dafür geeigneter phasenmodulator Ceased WO2002075249A2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/471,923 US7102757B2 (en) 2001-03-16 2002-03-15 Current measurement method and device based on a fiber optic in-line Sagnac interferometer
EP02724238A EP1368667B1 (de) 2001-03-16 2002-03-15 Verfahren und einrichtung zur strommessung mittels eines faseroptischen in-line-sagnac-interferometers und dafür geeigneter phasenmodulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10112835.5 2001-03-16
DE10112835A DE10112835B4 (de) 2001-03-16 2001-03-16 Verfahren und Einrichtung zur Strommessung mittels eines faseroptischen In-Line-Sagnac-Interferometers und dafür geeigneter Phasenmodulator

Publications (2)

Publication Number Publication Date
WO2002075249A2 WO2002075249A2 (de) 2002-09-26
WO2002075249A3 true WO2002075249A3 (de) 2003-02-20

Family

ID=7677793

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/002906 Ceased WO2002075249A2 (de) 2001-03-16 2002-03-15 Verfahren und einrichtung zur strommessung mittels eines faseroptischen in-line-sagnac-interferometers und dafür geeigneter phasenmodulator

Country Status (4)

Country Link
US (1) US7102757B2 (de)
EP (1) EP1368667B1 (de)
DE (1) DE10112835B4 (de)
WO (1) WO2002075249A2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307525B4 (de) * 2003-02-21 2006-03-16 Litef Gmbh Verfahren und Einrichtung zur Erhöhung der Auflösung eines digitalen Phasenmodulators für eine faseroptische Signalübertragungs- oder Messeinrichtung
US8890508B2 (en) * 2007-05-04 2014-11-18 Alstom Technology Ltd Adaptive filters for fiber optic sensors
US20100141955A1 (en) * 2008-12-04 2010-06-10 Yong Huang Sensor probe for fiber-based current sensor
JP5904694B2 (ja) 2009-12-10 2016-04-20 株式会社東芝 サニャック干渉型光電流センサ
CN117606461B (zh) * 2024-01-24 2024-04-19 广东奥斯诺工业有限公司 双环差分式超高转速光子芯片光纤陀螺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485274A (en) * 1993-10-28 1996-01-16 Litef Gmbh Fiber optic interferometer with wavelength-stabilized light source
US5644397A (en) * 1994-10-07 1997-07-01 The Texas A&M University System Fiber optic interferometric circuit and magnetic field sensor
WO1998003895A1 (de) * 1996-07-19 1998-01-29 Litef Gmbh Elektrooptischer phasenmodulator mit richtungsunabhängiger impulsantwort
DE19808517A1 (de) * 1998-02-27 1999-09-16 Litef Gmbh Einrichtung zur Strommessung
US6301400B1 (en) * 1998-11-12 2001-10-09 Nxtphase Technologies Srl Fiber optic current sensor having rotation immunity

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5485274A (en) * 1993-10-28 1996-01-16 Litef Gmbh Fiber optic interferometer with wavelength-stabilized light source
US5644397A (en) * 1994-10-07 1997-07-01 The Texas A&M University System Fiber optic interferometric circuit and magnetic field sensor
WO1998003895A1 (de) * 1996-07-19 1998-01-29 Litef Gmbh Elektrooptischer phasenmodulator mit richtungsunabhängiger impulsantwort
DE19808517A1 (de) * 1998-02-27 1999-09-16 Litef Gmbh Einrichtung zur Strommessung
US6301400B1 (en) * 1998-11-12 2001-10-09 Nxtphase Technologies Srl Fiber optic current sensor having rotation immunity

Also Published As

Publication number Publication date
US7102757B2 (en) 2006-09-05
DE10112835A1 (de) 2002-10-24
DE10112835B4 (de) 2006-05-11
EP1368667A2 (de) 2003-12-10
EP1368667B1 (de) 2005-01-05
US20040095581A1 (en) 2004-05-20
WO2002075249A2 (de) 2002-09-26

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