CA2391395A1 - Method and apparatus for correcting systematic error in a wavelength measuring device - Google Patents

Method and apparatus for correcting systematic error in a wavelength measuring device Download PDF

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Publication number
CA2391395A1
CA2391395A1 CA002391395A CA2391395A CA2391395A1 CA 2391395 A1 CA2391395 A1 CA 2391395A1 CA 002391395 A CA002391395 A CA 002391395A CA 2391395 A CA2391395 A CA 2391395A CA 2391395 A1 CA2391395 A1 CA 2391395A1
Authority
CA
Canada
Prior art keywords
wavelength
reflected
temperature
fbgs
reference fbg
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
CA002391395A
Other languages
French (fr)
Other versions
CA2391395C (en
Inventor
Michael A. Davis
David R. Fournier
David G. Bellemore
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.)
Weatherford Technology Holdings LLC
Original Assignee
Cidra Corporation
Michael A. Davis
David R. Fournier
David G. Bellemore
Weatherford/Lamb, Inc.
Weatherford Technology Holdings, Llc
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 Cidra Corporation, Michael A. Davis, David R. Fournier, David G. Bellemore, Weatherford/Lamb, Inc., Weatherford Technology Holdings, Llc filed Critical Cidra Corporation
Publication of CA2391395A1 publication Critical patent/CA2391395A1/en
Application granted granted Critical
Publication of CA2391395C publication Critical patent/CA2391395C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/18—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors using comparison with a reference electric value

Abstract

A method and apparatus for compensating for systematic error a wavelength measure device, providing values for the wavelengths reflected from fiber Bragg gratings (FBGs) being used as sensors. The invention uses a high-precision temperature sensing and measuring circuit to measure the temperature of a reference FBG. The wavelength reflected by the reference FBG
changes with temperature in a known way and the temperature of the reference FBG must be measured to know what wavelength is in fact being reflected. This wavelength is then provided to a dynamic compensator, which also receives the wavelength of light reflected from the sensor FBGs, and adjusts the wavelengths of the sensors FBGs using a correction based on the correction required to adjust the wavelength of the reference FBG so as to agree with the wavelength in fact reflected from the reference FBG. The circuit uses a reference resistor, unaffected by temperature, and a thermistor, and measures bothresistances using the same exact circuit components by switching either the thermistor or the reference resistor in to the same temperature sensing and measuring circuit.
CA002391395A 1999-11-23 2000-11-13 Method and apparatus for correcting systematic error in a wavelength measuring device Expired - Fee Related CA2391395C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/448,003 1999-11-23
US09/448,003 US6403949B1 (en) 1999-11-23 1999-11-23 Method and apparatus for correcting systematic error in a wavelength measuring device
PCT/US2000/031057 WO2001038837A1 (en) 1999-11-23 2000-11-13 Method and apparatus for correcting systematic error in a wavelength measuring device

Publications (2)

Publication Number Publication Date
CA2391395A1 true CA2391395A1 (en) 2001-05-31
CA2391395C CA2391395C (en) 2006-08-22

Family

ID=23778633

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002391395A Expired - Fee Related CA2391395C (en) 1999-11-23 2000-11-13 Method and apparatus for correcting systematic error in a wavelength measuring device

Country Status (7)

Country Link
US (1) US6403949B1 (en)
EP (1) EP1236026B1 (en)
AU (1) AU1599901A (en)
CA (1) CA2391395C (en)
DE (1) DE60025524D1 (en)
NO (1) NO335932B1 (en)
WO (1) WO2001038837A1 (en)

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US7159653B2 (en) 2003-02-27 2007-01-09 Weatherford/Lamb, Inc. Spacer sub
US7245382B2 (en) * 2003-10-24 2007-07-17 Optoplan As Downhole optical sensor system with reference
US7145823B2 (en) * 2004-06-30 2006-12-05 Intel Corporation Method and apparatus to implement a temperature control mechanism on a memory device
US7603041B2 (en) * 2005-06-09 2009-10-13 Cubic Corporation Temperature compensated dynamic optical tag modulator system and method
US7413343B2 (en) * 2005-09-16 2008-08-19 Kyocera Wireless Corp. Apparatus for determining a temperature sensing element
TWI262289B (en) * 2005-09-23 2006-09-21 Univ Nat Chiao Tung Optical-fiber raster double-bearing type inclination sensor for sensing stratum displacement
US8027591B2 (en) * 2007-10-29 2011-09-27 Cubic Corporation Resonant quantum well modulator driver
JP5215060B2 (en) * 2008-07-02 2013-06-19 テルモ株式会社 Electronic thermometer and operation control method
WO2011063086A1 (en) 2009-11-19 2011-05-26 Halliburton Energy Services, Inc. Downhole optical radiometry tool
CA2756285C (en) * 2009-12-23 2014-01-07 Halliburton Energy Services, Inc. Interferometry-based downhole analysis tool
CN102906370B (en) 2010-06-01 2015-12-09 哈里伯顿能源服务公司 Spectrum nano-sensor logging system and method
US8946660B2 (en) 2010-06-16 2015-02-03 Halliburton Energy Services, Inc. Downhole sources having enhanced IR emission
TWI445936B (en) 2011-06-03 2014-07-21 Univ Nat Taiwan Science Tech Temperature sensing system for supporting single-point calibration
US9562844B2 (en) * 2014-06-30 2017-02-07 Baker Hughes Incorporated Systems and devices for sensing corrosion and deposition for oil and gas applications
US10209378B2 (en) * 2015-03-26 2019-02-19 Halliburton Energy Services, Inc. Photopeak location systems and methods
TWI577975B (en) * 2015-06-02 2017-04-11 國立成功大學 Fiber signal scanning device and fiber signal scanning method
US11143786B2 (en) * 2018-07-05 2021-10-12 Halliburton Energy Services, Inc. Intrinsic geological formation carbon to oxygen ratio measurements
US10527784B1 (en) * 2018-11-15 2020-01-07 General Electric Company Systems and methods for providing a stable wavelength reference in an integrated photonic circuit
CN112344973B (en) * 2020-09-27 2022-07-26 北京遥测技术研究所 Fiber grating etalon based on closed cavity metal plate temperature control and use method
US11698308B2 (en) * 2020-10-05 2023-07-11 Openlight Photonics, Inc. Optical temperature measurements in photonic circuits

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Also Published As

Publication number Publication date
EP1236026B1 (en) 2006-01-11
AU1599901A (en) 2001-06-04
NO20022416L (en) 2002-07-18
CA2391395C (en) 2006-08-22
NO335932B1 (en) 2015-03-30
EP1236026A1 (en) 2002-09-04
DE60025524D1 (en) 2006-04-06
US6403949B1 (en) 2002-06-11
WO2001038837A1 (en) 2001-05-31
WO2001038837A8 (en) 2001-11-29
NO20022416D0 (en) 2002-05-22

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Effective date: 20171114