CA2639131C - Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques - Google Patents

Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques Download PDF

Info

Publication number
CA2639131C
CA2639131C CA2639131A CA2639131A CA2639131C CA 2639131 C CA2639131 C CA 2639131C CA 2639131 A CA2639131 A CA 2639131A CA 2639131 A CA2639131 A CA 2639131A CA 2639131 C CA2639131 C CA 2639131C
Authority
CA
Canada
Prior art keywords
polarization
pulse
light
phase
sensor
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 - Lifetime
Application number
CA2639131A
Other languages
English (en)
Other versions
CA2639131A1 (fr
Inventor
Ole Henrik Waagaard
Erlend Ronnekleiv
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.)
Alcatel Submarine Networks Norway AS
Original Assignee
Optoplan AS
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 US10/650,117 external-priority patent/US7081959B2/en
Priority claimed from US10/649,590 external-priority patent/US7088878B2/en
Application filed by Optoplan AS filed Critical Optoplan AS
Publication of CA2639131A1 publication Critical patent/CA2639131A1/fr
Application granted granted Critical
Publication of CA2639131C publication Critical patent/CA2639131C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/344—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using polarisation
    • G01D5/345—Polarising encoders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35303—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using a reference fibre, e.g. interferometric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

Procédé et appareil qui utilisent la modulation de source spécifique et des détecteurs pour détecter une réponse qui transporte des informations relatives à une matrice de réponses système associée à chaque capteur dans un réseau de capteurs interférométriques et pour extraire une réponse de capteur d'une manière qui élimine l'évanouissement du signal induit par la polarisation et qui est insensible aux fluctuations de biréfringence de la fibre de plomb.
CA2639131A 2003-08-27 2004-08-25 Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques Expired - Lifetime CA2639131C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US10/650,117 2003-08-27
US10/650,117 US7081959B2 (en) 2003-08-27 2003-08-27 Method and apparatus for providing polarization insensitive signal processing for interferometric sensors
US10/649,590 2003-08-27
US10/649,590 US7088878B2 (en) 2003-08-27 2003-08-27 Method and apparatus for producing depolarized light
CA002479081A CA2479081C (fr) 2003-08-27 2004-08-25 Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002479081A Division CA2479081C (fr) 2003-08-27 2004-08-25 Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques

Publications (2)

Publication Number Publication Date
CA2639131A1 CA2639131A1 (fr) 2005-02-27
CA2639131C true CA2639131C (fr) 2010-01-26

Family

ID=33135364

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2639131A Expired - Lifetime CA2639131C (fr) 2003-08-27 2004-08-25 Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques
CA002479245A Expired - Lifetime CA2479245C (fr) 2003-08-27 2004-08-25 Methode et dispositif produisant de la lumiere depolarisee
CA002479081A Expired - Lifetime CA2479081C (fr) 2003-08-27 2004-08-25 Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques

Family Applications After (2)

Application Number Title Priority Date Filing Date
CA002479245A Expired - Lifetime CA2479245C (fr) 2003-08-27 2004-08-25 Methode et dispositif produisant de la lumiere depolarisee
CA002479081A Expired - Lifetime CA2479081C (fr) 2003-08-27 2004-08-25 Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques

Country Status (2)

Country Link
CA (3) CA2639131C (fr)
GB (2) GB2405469B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7466425B2 (en) 2005-04-22 2008-12-16 Agilent Technologies, Inc. Elementary matrix based optical signal/network analyzer
US10247581B2 (en) 2014-04-28 2019-04-02 Optoplan As Interferometric optical fibre sensor system and method of interrogation
WO2016086310A1 (fr) * 2014-12-04 2016-06-09 Hifi Engineering Inc. Interrogateur optique permettant de réaliser une interférométrie au moyen de réseaux de bragg sur fibre
GB2568305B (en) 2017-11-13 2022-06-15 Univ Cranfield A fibre optic sensing device
CN109631962B (zh) * 2018-12-20 2020-12-04 中国人民解放军国防科技大学 一种基于pgc方案的多频载波偏振调制解调系统及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5173743A (en) * 1991-05-28 1992-12-22 Litton Systems, Inc. Fiber optical time-division-multiplexed unbalanced pulsed interferometer with polarization fading compensation
EP0570151B1 (fr) * 1992-05-08 1997-10-29 Kokusai Denshin Denwa Co., Ltd Emetteur optique avec un signal lumineux de degré de polarisation réduit et circuit optique de dépolarisation
US6574015B1 (en) * 1998-05-19 2003-06-03 Seagate Technology Llc Optical depolarizer
NO322073B1 (no) * 1999-06-23 2006-08-07 Optoplan As Fremgangsmate for polarisasjonskontroll
CA2393172C (fr) * 2002-07-12 2008-11-04 Itf Technologies Optiques Inc.- Itf Optical Technologies Inc. Depolariseur tout en fibres de conception lineaire

Also Published As

Publication number Publication date
GB0419047D0 (en) 2004-09-29
CA2639131A1 (fr) 2005-02-27
CA2479245A1 (fr) 2005-02-27
GB2405469A (en) 2005-03-02
GB2406166B (en) 2006-07-05
GB0419163D0 (en) 2004-09-29
GB2405469B (en) 2006-11-29
CA2479081A1 (fr) 2005-02-27
GB2406166A (en) 2005-03-23
CA2479245C (fr) 2010-01-12
CA2479081C (fr) 2008-11-25

Similar Documents

Publication Publication Date Title
US7359061B2 (en) Method and apparatus for providing polarization insensitive signal processing for interferometric sensors
KR100721497B1 (ko) 폴디드 사냑 센서 어레이
US7088878B2 (en) Method and apparatus for producing depolarized light
US6667935B2 (en) Apparatus and method for processing optical signals from two delay coils to increase the dynamic range of a sagnac-based fiber optic sensor array
US6678211B2 (en) Amplified tree structure technology for fiber optic sensor arrays
EP1423986B1 (fr) Appareil et procede de traitement de signaux optiques en provenance de deux bobines retard de facon a augmenter la portee dynamique d'un reseau de capteurs optiques par fibre effet sagnac
AU2001252893A1 (en) Folded sagnac sensor array
NO329939B1 (no) Foldet Sagnac-sensoroppstilling
US6856401B1 (en) Elimination of polarization fading in unbalanced optical measuring interferometers
CA2639131C (fr) Methode et dispositif assurant le traitement des signaux insensibles a la polarisation pour capteurs interferometriques
EP1423987B1 (fr) Technologie de structure d'arbre amplifie pour reseaux de fibres optiques
AU2002326577B2 (en) Amplified tree structure technology for fiber optic sensor arrays
AU2002324652B2 (en) Two delay coil Sagnac-based sensor array
Vakoc Development of a novel Sagnac interferometer-based fiber-optic acoustic sensor array
AU2002326577A1 (en) Amplified tree structure technology for fiber optic sensor arrays
AU2002324652A1 (en) Two delay coil Sagnac-based sensor array

Legal Events

Date Code Title Description
EEER Examination request