WO2001051889A8 - Apparatus and method for electronic rin reduction in fiber-optic sensors - Google Patents

Apparatus and method for electronic rin reduction in fiber-optic sensors

Info

Publication number
WO2001051889A8
WO2001051889A8 PCT/US2001/001118 US0101118W WO0151889A8 WO 2001051889 A8 WO2001051889 A8 WO 2001051889A8 US 0101118 W US0101118 W US 0101118W WO 0151889 A8 WO0151889 A8 WO 0151889A8
Authority
WO
WIPO (PCT)
Prior art keywords
noise
optical sensor
noise component
sensor
input light
Prior art date
Application number
PCT/US2001/001118
Other languages
French (fr)
Other versions
WO2001051889A3 (en
WO2001051889A2 (en
Inventor
Sidney M Bennett
Original Assignee
Kvh Ind Inc
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 Kvh Ind Inc filed Critical Kvh Ind Inc
Priority to CA002402861A priority Critical patent/CA2402861A1/en
Priority to JP2001552055A priority patent/JP2003519788A/en
Priority to EP01903059A priority patent/EP1248941A2/en
Publication of WO2001051889A2 publication Critical patent/WO2001051889A2/en
Publication of WO2001051889A3 publication Critical patent/WO2001051889A3/en
Publication of WO2001051889A8 publication Critical patent/WO2001051889A8/en

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
    • G01C19/721—Details

Abstract

The invention is directed to an apparatus and a method for reducing noise, in particular RIN noise, in optical sensors, in particular fiber-optic sensors. The optical sensor produces a sensor output signal representing a physical quantity to be measured and also contains a first noise component, which is detected by a first detector. A separate detector detects an input light noise component of in the input light source of the optical sensor and produces a second noise component. The second noise component is electronically processed and time-delayed or phase shifted by a time delay which substantially correspond to the time delay experienced by the sensor input light traversing the optical sensor. The time-delayed processed signal is then subtracted from the sensor output signal to produce a reduced noise optical sensor signal corresponding to the measured physical quantity.
PCT/US2001/001118 2000-01-12 2001-01-12 Apparatus and method for electronic rin reduction in fiber-optic sensors WO2001051889A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002402861A CA2402861A1 (en) 2000-01-12 2001-01-12 Apparatus and method for electronic rin reduction in fiber-optic sensors
JP2001552055A JP2003519788A (en) 2000-01-12 2001-01-12 Apparatus and method for electronic RIN reduction in fiber optic sensors
EP01903059A EP1248941A2 (en) 2000-01-12 2001-01-12 Apparatus and method for electronic rin reduction in fiber-optic sensors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/481,159 2000-01-12
US09/481,159 US6370289B1 (en) 2000-01-12 2000-01-12 Apparatus and method for electronic RIN reduction in fiber-optic sensors

Publications (3)

Publication Number Publication Date
WO2001051889A2 WO2001051889A2 (en) 2001-07-19
WO2001051889A3 WO2001051889A3 (en) 2002-01-10
WO2001051889A8 true WO2001051889A8 (en) 2003-02-20

Family

ID=23910855

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/001118 WO2001051889A2 (en) 2000-01-12 2001-01-12 Apparatus and method for electronic rin reduction in fiber-optic sensors

Country Status (5)

Country Link
US (2) US6370289B1 (en)
EP (1) EP1248941A2 (en)
JP (1) JP2003519788A (en)
CA (1) CA2402861A1 (en)
WO (1) WO2001051889A2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6563589B1 (en) 1996-04-19 2003-05-13 Kvh Industries, Inc. Reduced minimum configuration fiber optic current sensor
US6891622B2 (en) 1999-02-11 2005-05-10 Kvh Industries, Inc. Current sensor
US6539134B1 (en) 1999-02-11 2003-03-25 Kvh Industries, Inc. Polarization transformer
AU2001255167A1 (en) 2000-02-28 2001-09-03 Kvh Industries, Inc. Faraday-effect current sensor with improved vibration response
WO2002006769A2 (en) 2000-07-13 2002-01-24 Kvh Industries, Inc. Method for controlling fiber optic sensor scale factor
WO2002010813A2 (en) * 2000-08-02 2002-02-07 Kvh Industries, Inc. Reduction of linear birefringence in circular-core single-mode fiber
WO2002023237A2 (en) 2000-08-02 2002-03-21 Kvh Industries, Inc. Decreasing the effects of linear birefringence in a fiber-optic sensor by use of berry's topological phase
US6836334B2 (en) * 2001-10-31 2004-12-28 Kvh Industries, Inc. Angle random walk (ARW) noise reduction in fiber optic sensors using an optical amplifier
US6724962B2 (en) * 2002-01-23 2004-04-20 Yuan Ze University Wavelength to optical power converter and method for converting wavelength into optical power
US6763153B2 (en) * 2002-04-17 2004-07-13 Kvh Industries, Inc. Apparatus and method for electronic RIN reduction in fiber-optic sensors utilizing filter with group delay
US7046867B2 (en) * 2003-02-14 2006-05-16 Abb Research Ltd Fiberoptic current sensor having a plurality of sensor heads
DE10339889B4 (en) * 2003-08-29 2005-12-15 Litef Gmbh Method for determining / compensating for light source induced bias / random walk errors in Sagnac fiber optic interferometers
US7277179B2 (en) * 2004-12-13 2007-10-02 General Electric Company Magneto-optical sensors
US7586619B2 (en) * 2006-12-21 2009-09-08 Honeywell International, Inc. Spectral balancing system and method for reducing noise in fiber optic gyroscopes
US7561085B2 (en) * 2007-03-21 2009-07-14 Honeywell International Inc. Systems and methods for improving data converters
WO2009012354A1 (en) * 2007-07-17 2009-01-22 Clemson University System and method to assess signal similarity with applications to diagnostics and prognostics
US7710576B2 (en) * 2008-03-10 2010-05-04 Honeywell International Inc. Method and apparatus for monitoring angle random walk of a fiber optic gyroscope
US8922194B2 (en) 2009-09-11 2014-12-30 Alstom Technology Ltd Master-slave fiber optic current sensors for differential protection schemes
US20120200422A1 (en) * 2011-02-09 2012-08-09 Baker Hughes Incorporated Use of Digital Transport Delay to Improve Measurement Fidelity in Swept-Wavelength Systems
FR3052859B1 (en) * 2016-06-20 2018-11-23 Ixblue MEASUREMENT SYSTEM AND GYROMETER COMPRISING SUCH A SYSTEM
US10458795B1 (en) * 2017-08-14 2019-10-29 National Technology & Engineering Solutions Of Sandia, Llc Optomechanical gyroscope utilizing the Sagnac effect
EP3848671B1 (en) 2020-01-09 2023-10-11 The Board of Trustees of the Leland Stanford Junior University Fiber optic gyroscope with optical gating for spike suppression
CN111189619B (en) * 2020-01-10 2022-06-03 全球能源互联网研究院有限公司 Device and method for measuring laser tuning precision
CN113739783B (en) * 2021-11-08 2022-03-01 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） System and method for suppressing ringing effect error of fiber optic gyroscope

Family Cites Families (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615582A (en) 1981-11-09 1986-10-07 The Board Of Trustees Of The Leland Stanford Junior University Magneto-optic rotator for providing additive Faraday rotations in a loop of optical fiber
US4733938A (en) 1981-11-09 1988-03-29 The Board Of Trustees Of The Leland Stanford Junior University Magneto-optic rotator
BE892241A (en) 1982-02-23 1982-06-16 Dev Et D Industrialisation Des CIRCUIT FOR FAST CALCULATION OF THE DISCRETE FOURIER TRANSFORM OF A SIGNAL, IN PARTICULAR FOR AN EDDY CURRENT MONITORING APPARATUS.
US4669814A (en) 1982-08-02 1987-06-02 Andrew Corporation Single mode, single polarization optical fiber with accessible guiding region and method of forming directional coupler using same
US4755021A (en) 1982-08-02 1988-07-05 Andrew Corporation Self-aligning optical fiber directional coupler and fiber-ring optical rotation sensor using same
US4668264A (en) 1982-08-02 1987-05-26 Andrew Corporation Method for making self-aligning optical fiber with accessible guiding region
JPS5945646A (en) 1982-09-07 1984-03-14 Hitachi Ltd Optical information reproducer
FR2535463A1 (en) 1982-10-28 1984-05-04 Commissariat Energie Atomique Device for measuring electric current based on the Faraday effect
DE3305104A1 (en) 1983-02-15 1984-08-16 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Fibre-optic polariser
US4697876A (en) 1983-02-25 1987-10-06 Andrew Corporation Fiber-optic rotation sensor
US4637722A (en) 1983-04-25 1987-01-20 The Board Of Trustees Of The Leland Stanford Junior University Fiber optical rotation sensor with extended dynamic range
US4630890A (en) 1983-06-22 1986-12-23 At&T Bell Laboratories Exposed core optical fibers, and method of making same
US4603931A (en) 1984-12-14 1986-08-05 Ruffman Samuel H Anti-theft device for appliances with electrical AC power cords
FR2582800B1 (en) 1985-05-30 1987-07-17 Thomson Csf SINGLE-MODE OPTICAL FIBER RING INTERFEROMETRIC DEVICE
DE3615305A1 (en) 1985-09-28 1987-11-12 Licentia Gmbh Process for producing a fibre-optical polariser
JPH0680405B2 (en) 1985-11-06 1994-10-12 株式会社東芝 Light fiber gyro
US4740085A (en) 1986-02-18 1988-04-26 Northrop Corporation Scale factor stability control
US4712866A (en) 1986-07-24 1987-12-15 Andrew Corporation Indium-clad fiber-optic polarizer
US4887900A (en) 1987-02-20 1989-12-19 Litton Systems, Inc. Polarization maintaining fiber interferometer and method for source stabilization
US4796993A (en) 1987-04-13 1989-01-10 Hitachi, Ltd. Phase modulation type fiber optic gyroscope
FR2616538B1 (en) 1987-06-11 1989-09-01 Alsthom SAGNAC-TYPE FIBER OPTIC INTERFEROMETRIC SYSTEM
US4883358A (en) 1987-09-02 1989-11-28 Japan Aviation Electronics Industry Limited Fiber optic gyro stabilized by harmonic components of detected signal
US4776700A (en) 1987-09-30 1988-10-11 The United States Of America As Represented By The Secretary Of The Navy Switched state fiber optic gyroscope
DE3742201C2 (en) 1987-12-12 1998-01-29 Teldix Gmbh Fiber gyroscope
US4815817A (en) 1988-04-06 1989-03-28 Raynet Corporation D-shaped fiber
CN1018955B (en) 1988-10-23 1992-11-04 黄宏嘉 Method and apparatus of using passive optical fiber to control polarization
US5080489A (en) 1989-03-29 1992-01-14 Kubota, Ltd. Fiber optic gyroscope for detecting angular velocity of rotation using equivalent time sampling
JP2587104B2 (en) 1989-05-15 1997-03-05 三菱プレシジョン株式会社 Signal processor for optical fiber gyro
EP0400197B1 (en) 1989-06-02 1993-10-06 LITEF GmbH Process and device for demodulating the turning rate signal of a fibre-optical gyroscope
US5033854A (en) 1989-12-06 1991-07-23 Litton Systems, Inc. Multiplexed fiberoptic gyro control
US5135555A (en) 1989-12-21 1992-08-04 At&T Bell Laboratories Apparatus for fabrication of optical couplers
US5074665A (en) 1989-12-21 1991-12-24 Andrew Corporation Fiber optic gyroscope using dual-section counter-wound coil
US5218419A (en) 1990-03-19 1993-06-08 Eli Lilly And Company Fiberoptic interferometric sensor
US5106193A (en) 1990-08-09 1992-04-21 The Board Of Trustees Of The Leland Stanford Junior University Optical waveguide amplifier source gyroscope
US5412471A (en) 1991-03-12 1995-05-02 Mitsubishi Precision Co., Ltd. Optical gyro with expanded detectable range of input rotation angular velocity and optical waveguide-type phase modulator used in the same
US5289257A (en) 1991-05-17 1994-02-22 Mitsubishi Precision Co., Ltd. Signal processing apparatus for optical gyro
US5365338A (en) 1991-05-28 1994-11-15 The United States Of America As Represented By The Secretary Of The Navy Wavelength sensor for fiber optic gyroscope
EP0551537B1 (en) 1992-01-13 1995-03-22 LITEF GmbH Method and device to measure rotation rate using a fibre optic sagnac interferometer
US5359413A (en) 1992-01-13 1994-10-25 Kearfott Guidance And Navigation Corporation System for substantially eleminating lock-in in a ring laser gyroscope
US5289258A (en) 1992-01-15 1994-02-22 Honeywell Inc. Fiber optic gyroscope modulation error reduction
EP0551874A3 (en) 1992-01-16 1993-09-08 Japan Aviation Electronics Industry, Limited Fiber optic gyro
JPH06129859A (en) 1992-09-02 1994-05-13 Sumitomo Electric Ind Ltd Optical fiber gyro taking out signal from light source
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
DE4304762A1 (en) 1993-02-17 1994-08-18 Abb Research Ltd Sensor head for a fiber optic current measuring device
GB2276000B (en) 1993-02-27 1996-10-09 British Aerospace Laser gyroscopes
US5471301A (en) 1993-08-23 1995-11-28 Hitachi Cable, Ltd. Optical fiber gyro
JP3011592B2 (en) 1993-11-16 2000-02-21 日立電線株式会社 Failure detection method and failure diagnosis device for optical fiber gyro
US5469257A (en) * 1993-11-24 1995-11-21 Honeywell Inc. Fiber optic gyroscope output noise reducer
US5493396A (en) 1993-11-30 1996-02-20 Honeywell Inc. High resolution ring laser gyroscope readout
US5504684A (en) 1993-12-10 1996-04-02 Trimble Navigation Limited Single-chip GPS receiver digital signal processing and microcomputer
JP2953290B2 (en) 1994-01-24 1999-09-27 日新電機株式会社 Faraday effect type optical fiber sensor and current transformer
US5469267A (en) 1994-04-08 1995-11-21 The University Of Rochester Halftone correction system
US5457532A (en) 1994-05-31 1995-10-10 Honeywell Inc. Harmonic phase modulation error reducer
US5479542A (en) 1994-06-09 1995-12-26 Ceramoptec Industries Inc. All-fiber in line optical isolator
US5552887A (en) 1995-04-07 1996-09-03 Andrew Corporation Fiber optic rotation sensor or gyroscope with improved sensing coil
US5654906A (en) 1995-07-06 1997-08-05 Youngquist; John S. Rate gyro error correction and use as heading source
JP3860237B2 (en) 1995-07-26 2006-12-20 富士通株式会社 Optical fiber having polarization dispersion suppression characteristic and manufacturing method thereof
EP0785913B1 (en) 1995-08-16 2000-05-31 Plasma Optical Fibre B.V. Optical fiber with low polarisation mode dispersion
US5655035A (en) * 1995-11-16 1997-08-05 Alliedsignal Inc. Differential fiber optic angular rate sensor for minimizing common mode noise in the sensor output
US5682241A (en) 1996-03-11 1997-10-28 Litton Systems, Inc. Method and apparatus for overcoming cross-coupling in a fiber optic gyroscope employing overmodulation
KR19980077130A (en) 1996-04-19 1998-11-16 마틴 키츠 반 하이닝겐 Minimal, Minimal Configuration Fiber Optic Gyroscope with Simplified Signal Processing
US5854864A (en) 1996-07-16 1998-12-29 The Regents Of The University Of California In-line polymeric construct for modulators, filters, switches and other electro-optic devices
US5987195A (en) 1996-08-01 1999-11-16 The Texas A&M University System Fiber optics apparatus and method for accurate current sensing
US5767509A (en) 1996-12-24 1998-06-16 Litton Systems, Inc. Fiber optic sensor coil including buffer regions
DE19703128A1 (en) 1997-01-29 1998-08-06 Abb Research Ltd Magneto-optical current sensor
US5898496A (en) 1997-02-14 1999-04-27 Allied Signal Inc Optical signal noise reduction for fiber optic gyroscopses
US5781675A (en) 1997-03-14 1998-07-14 National Science Council Method for preparing fiber-optic polarizer
EP0970396B1 (en) 1997-03-29 2004-09-22 Deutsche Telekom AG Fiber-integrated photon crystals and systems
EP0872756A1 (en) 1997-04-14 1998-10-21 BRITISH TELECOMMUNICATIONS public limited company Optical modulator
KR100241660B1 (en) 1997-05-22 2000-03-02 서원석 Fiber polarization control device
US6023331A (en) 1997-06-19 2000-02-08 The Texas A&M University System Fiber optic interferometric sensor and method by adding controlled amounts of circular birefringence in the sensing fiber
GB2329482B (en) 1997-09-23 1999-08-11 Bookham Technology Ltd An optical circuit
US5946097A (en) 1997-12-31 1999-08-31 Honeywell Inc. Vibration rectification error reducer for fiber optic gyroscope
FR2776784A1 (en) 1998-03-30 1999-10-01 France Telecom Electro-optical modulator, forming a Pockels cell
US6025915A (en) 1998-06-25 2000-02-15 Litton Systems, Inc. Scale factor stabilization of a broadband fiber source used in fiber optic gyroscopes in radiation environments
US6301400B1 (en) 1998-11-12 2001-10-09 Nxtphase Technologies Srl Fiber optic current sensor having rotation immunity
JP2003094633A (en) * 2001-09-20 2003-04-03 Ricoh Co Ltd Electrostatic ink jet head and recorder

Also Published As

Publication number Publication date
EP1248941A2 (en) 2002-10-16
US6370289B1 (en) 2002-04-09
US20030031397A1 (en) 2003-02-13
CA2402861A1 (en) 2001-07-19
WO2001051889A3 (en) 2002-01-10
US6542651B2 (en) 2003-04-01
WO2001051889A2 (en) 2001-07-19
JP2003519788A (en) 2003-06-24

Similar Documents

Publication Publication Date Title
WO2001051889A8 (en) Apparatus and method for electronic rin reduction in fiber-optic sensors
WO2004092713A3 (en) System and method for attenuating the effect of ambient light on an optical sensor
EP1574832A3 (en) Optical phase measurement of target
WO2006079011A8 (en) Low coherence interferometry for detecting and characterizing plaques
HK1078651A1 (en) Distance measurement sensor
AU7050500A (en) Methods and apparatus for mechanically enhancing the sensitivity of longitudinally loaded fiber optic sensors
WO2001061888A3 (en) Electrical detector for adaptive control of chromatic dispersion in optical systems
WO2008001334A3 (en) Signal integration measure for seismic data
TW200734605A (en) Phase measurement method and application
WO2008062360A3 (en) Apparatus and method for determining a detector energy weighting function of a detection unit
AU2002352198A1 (en) Field device electronics system with a sensor mechanism for process measurement
WO2003071286A3 (en) Apparatus and method for measuring velocity of a projectile in a barrel
WO2008062199A3 (en) Imaging method and apparatus
WO2002004895A3 (en) Optical position sensor and position determination method
AU2003293964A1 (en) Optoelectronic measuring system with extraneous light compensation, and method for carrying out the phase-correct compensation of a signal of the measuring system
WO2007144808A3 (en) A method of providing a clock frequency for a processor
WO2007111978A3 (en) Inertial measurement system and method with bias cancellation
ATE459067T1 (en) GOODS SHELF, GOODS CONTAINER AND METHOD FOR CONTROLLING THE REMOVAL OF GOODS
EP1130816A3 (en) System and method for optical heterodyne detection of an optical signal
NO20023503D0 (en) Dynamic fiber optic sensor signal processing method
ATE401619T1 (en) METHOD FOR INTERFERENCE-FREE IMAGE CAPTURE USING AN ELECTRONIC SENSOR
WO2004113843A3 (en) Method for calculation of a phase signal from a fiber optic sensor array with a phase generated carrier
WO2003052396A3 (en) Methods and devices for erasing errors and compensating interference signals caused by gammagraphy in radiometric measuring systems
EP1161007A3 (en) System and method for optical heterodyne detection of an optical signal
EP1460448A3 (en) Apparatus for Determining the State of a Light Source, Method for Calibrating this Apparatus and Method of Determining the State of the Light Source.

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

ENP Entry into the national phase

Ref country code: JP

Ref document number: 2001 552055

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 2402861

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2001903059

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2001903059

Country of ref document: EP

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
CFP Corrected version of a pamphlet front page
CR1 Correction of entry in section i

Free format text: PAT. BUL. 29/2001 UNDER (81) ADD "CA"; DUE TO LATE TRANSMITTAL BY THE RECEIVING OFFICE

WWW Wipo information: withdrawn in national office

Ref document number: 2001903059

Country of ref document: EP