DE60327025D1 - Faseroptische Sensoren mit reduziertem Rauschen - Google Patents

Faseroptische Sensoren mit reduziertem Rauschen

Info

Publication number
DE60327025D1
DE60327025D1 DE60327025T DE60327025T DE60327025D1 DE 60327025 D1 DE60327025 D1 DE 60327025D1 DE 60327025 T DE60327025 T DE 60327025T DE 60327025 T DE60327025 T DE 60327025T DE 60327025 D1 DE60327025 D1 DE 60327025D1
Authority
DE
Germany
Prior art keywords
fiber optic
reduced noise
optic sensors
sensors
noise
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
DE60327025T
Other languages
English (en)
Inventor
Michel J F Digonnet
Original Assignee
Univ R
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 Univ R filed Critical Univ R
Application granted granted Critical
Publication of DE60327025D1 publication Critical patent/DE60327025D1/de
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
    • G01D5/353—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
    • G01D5/3537—Optical fibre sensor using a particular arrangement of the optical fibre itself
    • G01D5/3538—Optical fibre sensor using a particular arrangement of the optical fibre itself using a particular type of fiber, e.g. fibre with several cores, PANDA fiber, fiber with an elliptic core or the like
    • 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
    • G01C19/721—Details
    • G01C19/722—Details of the mechanical construction
    • 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
    • G01D5/35306—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 an interferometer arrangement
    • G01D5/35322—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 an interferometer arrangement using interferometer with one loop with several directions of circulation of the light, e.g. Sagnac interferometer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
DE60327025T 2002-08-20 2003-08-20 Faseroptische Sensoren mit reduziertem Rauschen Expired - Lifetime DE60327025D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40504902P 2002-08-20 2002-08-20
US10/616,693 US20040061863A1 (en) 2002-08-20 2003-07-10 Fiber optic sensors with reduced noise

Publications (1)

Publication Number Publication Date
DE60327025D1 true DE60327025D1 (de) 2009-05-20

Family

ID=31191428

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60327025T Expired - Lifetime DE60327025D1 (de) 2002-08-20 2003-08-20 Faseroptische Sensoren mit reduziertem Rauschen

Country Status (6)

Country Link
US (1) US20040061863A1 (de)
EP (1) EP1391693B1 (de)
JP (1) JP4568817B2 (de)
CA (1) CA2437841C (de)
DE (1) DE60327025D1 (de)
IL (1) IL157469A (de)

Families Citing this family (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7738109B2 (en) 2002-08-20 2010-06-15 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic sensor using a Bragg fiber
US7180598B2 (en) * 2002-11-13 2007-02-20 The Charles Stark Draper Laboratory, Inc. Photonic crystal interferometric fiber optical gyroscope system
US7483598B2 (en) * 2004-03-15 2009-01-27 Queen's University At Kingston Phase shift optical loop spectroscopy
US7349589B2 (en) * 2004-04-08 2008-03-25 Omniguide, Inc. Photonic crystal fibers and medical systems including photonic crystal fibers
US8395782B2 (en) * 2004-06-15 2013-03-12 Optellios, Inc. Detection and location of boundary intrusion, using composite variables derived from phase measurements
US7245381B2 (en) * 2004-12-20 2007-07-17 Northrop Grumman Corporation Ring laser gyroscope that does not require mirrors
GB0501493D0 (en) * 2005-01-24 2005-03-02 Univ Bath An optical assembly and method
WO2006083691A1 (en) * 2005-01-28 2006-08-10 Honeywell International, Inc. Hollow core fiber optical gyro
US7477666B2 (en) * 2005-04-06 2009-01-13 Polar Onyx, Inc. All fiber based short pulse amplification at one micron
US7531780B1 (en) * 2005-10-03 2009-05-12 Lockheed Martin Corporation Spectrum analyzer device on a chip
US7388671B2 (en) * 2005-10-18 2008-06-17 Honeywell International, Inc. Polarizing cavity for RFOG and method for sensing rotation rate of resonator
US7327460B2 (en) * 2005-11-02 2008-02-05 Honeywell International, Inc. Transmission mode RFOG and method for detecting rotation with RFOG
US7372574B2 (en) * 2005-12-09 2008-05-13 Honeywell International Inc. System and method for stabilizing light sources in resonator gyro
US7336859B2 (en) 2005-12-28 2008-02-26 Honeywell International, Inc. Sensor using ultra thin waveguides and optical fibers
US7486401B2 (en) * 2006-02-27 2009-02-03 Honeywell International Inc. Laser medium pumping system for a gyroscope
US7551819B2 (en) * 2006-03-02 2009-06-23 The Board Of Trustees Of The Leland Stanford Junior University Multiple-core photonic-bandgap fiber with coupling between the cores
US7463360B2 (en) * 2006-04-18 2008-12-09 Honeywell International Inc. Optical resonator gyro with integrated external cavity beam generator
CA2656420A1 (en) * 2006-06-29 2008-01-03 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic sensor using a bragg fiber
US20080024786A1 (en) * 2006-07-31 2008-01-31 Honeywell International, Inc. Fiber optic gyroscope having a silicon-based optical chip
US7924427B2 (en) * 2006-09-27 2011-04-12 Northrop Grumman Guidance & Electronics Company Photonic crystal based rotation sensor
US7522284B2 (en) 2006-09-29 2009-04-21 Honeywell International Inc. Optical resonator gyro and method for reducing resonance asymmetry errors
JP5079877B2 (ja) * 2007-06-15 2012-11-21 ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティ 光センサにおいて低速光を使用するためのシステムおよび方法
EP2188592B1 (de) * 2007-11-15 2012-07-04 The Board of Trustees of The Leland Stanford Junior University Rauscharme faseroptischer sensor mit einer laserquelle
JPWO2009113355A1 (ja) * 2008-03-10 2011-07-21 住友電気工業株式会社 光通信システム
US8068232B2 (en) 2008-04-01 2011-11-29 The Board Of Trustees Of The Leland Stanford Junior University Unidirectional crow gyroscope
US7697143B2 (en) * 2008-05-30 2010-04-13 Honeywell International Inc. Reliable low loss hollow core fiber resonator
US7680372B2 (en) 2008-06-27 2010-03-16 Honeywell International Inc. Micro-optics photonic bandgap fiber coupler
KR100996707B1 (ko) * 2008-10-29 2010-11-25 한국전자통신연구원 광섬유를 이용한 신호광 발생 장치 및 회전 감지 장치
IL205351A (en) * 2009-04-28 2017-05-29 Univ Leland Stanford Junior Optical gyroscope driven by a laser having an indelible source coherence length
JP2010263153A (ja) * 2009-05-11 2010-11-18 Sumitomo Electric Ind Ltd 半導体集積光デバイス及びその作製方法
US9019482B2 (en) 2009-06-05 2015-04-28 The Board Of Trustees Of The Leland Stanford Junior University Optical device with fiber Bragg grating and narrowband optical source
US8009296B2 (en) * 2009-12-13 2011-08-30 Honeywell International Inc. Light-phase-noise error reducer
US7933020B1 (en) 2009-12-13 2011-04-26 Honeywell International Inc. System and method for reducing laser phase noise in a resonator fiber optic gyroscope
US8223341B2 (en) 2010-05-28 2012-07-17 Honeywell International Inc. System and method for enhancing signal-to-noise ratio of a resonator fiber optic gyroscope
US8213019B2 (en) 2010-09-07 2012-07-03 Honeywell International Inc. RFOG with optical heterodyning for optical signal discrimination
US8797540B2 (en) 2010-09-08 2014-08-05 The Board Of Trustees Of The Leland Stanford Junior University Slow-light fiber Bragg grating sensor
US9025157B2 (en) 2010-09-08 2015-05-05 The Board Of Trustees Of The Leland Stanford Junior University System and method for measuring perturbations using a slow-light fiber Bragg grating sensor
US8422024B2 (en) * 2011-06-01 2013-04-16 Honeywell International Inc. High performance hollow-core optical-fiber filter for optical rotation sensing
US8908187B2 (en) 2011-11-02 2014-12-09 Honeywell International Inc. System and method for reducing errors in a resonator fiber optic gyroscope
US8923352B2 (en) 2012-08-10 2014-12-30 Honeywell International Inc. Laser with transmission and reflection mode feedback control
US8873063B2 (en) 2012-08-14 2014-10-28 Honeywell International Inc. Low noise resonator fiber optic gyro
WO2014121144A1 (en) * 2013-02-01 2014-08-07 The Board Of Trustees Of The Leland Stanford Junior University Coupled waveguides for slow light sensor applications
US8947671B2 (en) 2013-02-22 2015-02-03 Honeywell International Inc. Method and system for detecting optical ring resonator resonance frequencies and free spectral range to reduce the number of lasers in a resonator fiber optic gyroscope
US9001336B1 (en) 2013-10-07 2015-04-07 Honeywell International Inc. Methods and apparatus of tracking/locking resonator free spectral range and its application in resonator fiber optic gyroscope
US9041934B2 (en) 2013-10-25 2015-05-26 Honeywell International Inc. Dispersion managed interferometric fiber optic gyroscope
US9683830B2 (en) 2014-10-29 2017-06-20 Honeywell International Inc Compensated broadband fiber light source with stable mean wavelength
CN104880183B (zh) * 2015-06-08 2017-10-10 北京航空航天大学 基于光子晶体光纤陀螺的新型噪声分离方法
CN105466457B (zh) * 2016-01-04 2017-03-15 北京航空航天大学 一种测量光子带隙光纤陀螺背向次波相干误差的装置及方法
CN107809312B (zh) * 2017-10-16 2020-05-08 北京航天控制仪器研究所 一种基于偏振编码的量子通信终端
WO2020087197A1 (zh) * 2018-10-29 2020-05-07 深圳大学 一种空芯光子带隙光纤干涉仪传感器、制作装置和方法
CN110426372B (zh) * 2019-07-16 2021-10-22 南昌航空大学 一种扫频式布里渊散射体弹性模量成像检测方法
CN111536960B (zh) * 2020-04-30 2022-01-18 浙江大学 一种双环并联谐振式陀螺系统及其双闭环数字解调方法
CN113346341B (zh) * 2021-05-18 2022-08-26 西北大学 一种全正色散的基于偏置nalm锁模的飞秒光纤激光器
CN113834484B (zh) * 2021-11-26 2022-03-08 北京航空航天大学 一种基于非瑞利散射模型误差的惯导/偏振组合导航方法
CN114199222B (zh) * 2021-12-13 2023-03-14 北京航空航天大学 一种有源谐振光纤陀螺
CN114739955B (zh) * 2022-05-25 2022-09-02 华北电力大学 一种变压器套管油中溶解气体光纤传感系统
CN116989826B (zh) * 2023-09-27 2023-12-08 中国船舶集团有限公司第七〇七研究所 一种光纤陀螺小转速标度因数非线性度测试方法

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US626038A (en) * 1899-05-30 Mechanical movement
US4013365A (en) * 1974-08-29 1977-03-22 The University Of Utah Laser gyroscope
US4389090A (en) * 1980-09-04 1983-06-21 The Board Of Trustees Of Leland Stanford Jr. Univ. Fiber optic polarization controller
US4536058A (en) * 1981-09-10 1985-08-20 The Board Of Trustees Of The Leland Stanford Junior University Method of manufacturing a fiber optic directional coupler
DE3136688C2 (de) * 1981-09-16 1984-07-26 Standard Elektrik Lorenz Ag, 7000 Stuttgart Einrichtung zur Messung der Rotationsgeschwindigkeit
US4773759B1 (en) * 1984-01-23 1996-08-06 Univ Leland Stanford Junior Interferometer with Kerr effect compensation
CA1231252A (en) * 1984-02-17 1988-01-12 Byoung Y. Kim Gated fiber optic rotation sensor with linearized scale factor
US4856900A (en) * 1987-06-03 1989-08-15 Litton Systems, Inc. Quadrupole-wound fiber optic sensing coil and method of manufacture thereof
DE68929397T2 (de) * 1988-12-07 2002-12-19 Univ Leland Stanford Junior Breitbandige Superfluoreszenz-Faserlaserquelle
US5255274A (en) * 1989-09-06 1993-10-19 The Board Of Trustees Of The Leland Stanford University Broadband laser source
GB2245096A (en) * 1990-06-01 1991-12-18 Gen Electric Co Plc Semiconductor laser pump source
DE4129085A1 (de) * 1991-09-02 1993-03-04 Bosch Gmbh Robert Optischer sensor fuer rotationsbewegungen
US5331404A (en) * 1992-11-30 1994-07-19 The United States Of America As Represented By The Secretary Of The Navy Low noise fiber gyroscope system which includes excess noise subtraction
JPH07128078A (ja) * 1994-02-16 1995-05-19 Univ Leland Stanford Jr カー効果補償を伴なう干渉計
US5552887A (en) * 1995-04-07 1996-09-03 Andrew Corporation Fiber optic rotation sensor or gyroscope with improved sensing coil
AUPN694795A0 (en) * 1995-12-01 1996-01-04 University Of Sydney, The Distributed feedback ring laser
US5802236A (en) * 1997-02-14 1998-09-01 Lucent Technologies Inc. Article comprising a micro-structured optical fiber, and method of making such fiber
GB9713018D0 (en) * 1997-06-20 1997-08-27 Secr Defence Optical fibre bend sensor
GB9713422D0 (en) * 1997-06-26 1997-08-27 Secr Defence Single mode optical fibre
KR100208773B1 (ko) * 1997-07-05 1999-07-15 윤덕용 진행방향이 스위칭되는 펄스형 링 레이저 자이로스코프
US6404966B1 (en) * 1998-05-07 2002-06-11 Nippon Telegraph And Telephone Corporation Optical fiber
AU755223B2 (en) * 1998-06-09 2002-12-05 Crystal Fibre A/S A photonic band gap fibre
AU5002099A (en) * 1998-07-30 2000-02-21 Corning Incorporated Method of fabricating photonic structures
JP3643774B2 (ja) * 1998-10-14 2005-04-27 マサチューセッツ インスティテュート オブ テクノロジー 光導波のための全方向多層デバイス
CA2686812C (en) * 1998-10-31 2013-05-28 The Board Of Trustees Of The Leland Stanford Junior University Polarization and wavelength stable superfluorescent sources
US6243522B1 (en) * 1998-12-21 2001-06-05 Corning Incorporated Photonic crystal fiber
US6108086A (en) * 1999-03-04 2000-08-22 Litton Systems, Inc. System and method of stabilizing the scale factor shift in fiber optic gyroscopes using a spectral monitor array
CN1192261C (zh) * 1999-04-01 2005-03-09 Nkt研究及创新公司 光子晶体光纤及其制造方法
US6334017B1 (en) * 1999-10-26 2001-12-25 Corning Inc Ring photonic crystal fibers
GB2365992B (en) * 2000-08-14 2002-09-11 Univ Southampton Compound glass optical fibres
US6625364B2 (en) * 2001-01-25 2003-09-23 Omniguide Communications Low-loss photonic crystal waveguide having large core radius
EP1410073A4 (de) * 2001-04-12 2005-11-09 Omniguide Comm Inc Faserwellenleiter mit hohem indexkontrast und anwendungen
US7738109B2 (en) * 2002-08-20 2010-06-15 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic sensor using a Bragg fiber
US7180598B2 (en) * 2002-11-13 2007-02-20 The Charles Stark Draper Laboratory, Inc. Photonic crystal interferometric fiber optical gyroscope system
KR100526344B1 (ko) * 2003-08-12 2005-11-08 삼성전자주식회사 승압 전압 제어장치 및 방법
US7327460B2 (en) * 2005-11-02 2008-02-05 Honeywell International, Inc. Transmission mode RFOG and method for detecting rotation with RFOG
CA2656420A1 (en) * 2006-06-29 2008-01-03 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic sensor using a bragg fiber
CN100547863C (zh) * 2006-10-20 2009-10-07 香港理工大学 光纤气体激光器和具有该激光器的光纤型环形激光陀螺仪
EP2188592B1 (de) * 2007-11-15 2012-07-04 The Board of Trustees of The Leland Stanford Junior University Rauscharme faseroptischer sensor mit einer laserquelle

Also Published As

Publication number Publication date
JP4568817B2 (ja) 2010-10-27
EP1391693A1 (de) 2004-02-25
US20040061863A1 (en) 2004-04-01
IL157469A (en) 2010-06-16
JP2004132963A (ja) 2004-04-30
IL157469A0 (en) 2004-03-28
CA2437841A1 (en) 2004-02-20
CA2437841C (en) 2010-03-16
EP1391693B1 (de) 2009-04-08

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