SE9504601L - A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating - Google Patents

A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating

Info

Publication number
SE9504601L
SE9504601L SE9504601A SE9504601A SE9504601L SE 9504601 L SE9504601 L SE 9504601L SE 9504601 A SE9504601 A SE 9504601A SE 9504601 A SE9504601 A SE 9504601A SE 9504601 L SE9504601 L SE 9504601L
Authority
SE
Sweden
Prior art keywords
bragg grating
fabry
optic sensor
reflecting elements
elements designed
Prior art date
Application number
SE9504601A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE504772C2 (en
SE9504601D0 (en
Inventor
Anders Henriksson
Original Assignee
Flygtekniska Foersoeksanstalte
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 Flygtekniska Foersoeksanstalte filed Critical Flygtekniska Foersoeksanstalte
Priority to SE9504601A priority Critical patent/SE9504601L/en
Publication of SE9504601D0 publication Critical patent/SE9504601D0/en
Priority to AU12198/97A priority patent/AU1219897A/en
Priority to PCT/SE1996/001731 priority patent/WO1997023766A1/en
Publication of SE504772C2 publication Critical patent/SE504772C2/en
Publication of SE9504601L publication Critical patent/SE9504601L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
    • 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
    • G01D5/35309—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 multiple waves interferometer
    • G01D5/35312—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 multiple waves interferometer using a Fabry Perot

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The present invention relates to a fibre-optic sensor in the form of a Fabry-Pérot interferometer having one or both beam-reflecting elements designed as a Bragg grating (BG). What especially distinguishes the invention is that the chirp function of at least one Bragg grating is balanced against one non-desired measurand, such that the shift of the centre (xr) of the reflection which is a result of the variation of the non-desired measurand exactly compensates for the optical path difference which this measurand generates in the interferometer. This can be carried out by the chirp function having the form LAMBDA 0(x) = lambda 0/2n0 (1+Ax/BL0-Cx), wherein A, B and C are constants which are determined analytically or experimentally for each different case of desired invariance.
SE9504601A 1995-12-22 1995-12-22 A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating SE9504601L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9504601A SE9504601L (en) 1995-12-22 1995-12-22 A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating
AU12198/97A AU1219897A (en) 1995-12-22 1996-12-20 Fibre-optic sensor in the form of a fabry-perot interferometer having one or both reflecting elements made as a bragg grating
PCT/SE1996/001731 WO1997023766A1 (en) 1995-12-22 1996-12-20 Fibre-optic sensor in the form of a fabry-perot interferometer having one or both reflecting elements made as a bragg grating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9504601A SE9504601L (en) 1995-12-22 1995-12-22 A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating

Publications (3)

Publication Number Publication Date
SE9504601D0 SE9504601D0 (en) 1995-12-22
SE504772C2 SE504772C2 (en) 1997-04-21
SE9504601L true SE9504601L (en) 1997-04-21

Family

ID=20400682

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9504601A SE9504601L (en) 1995-12-22 1995-12-22 A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating

Country Status (3)

Country Link
AU (1) AU1219897A (en)
SE (1) SE9504601L (en)
WO (1) WO1997023766A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9828469D0 (en) 1998-12-24 1999-02-17 British Aerospace A modulated fibre bragg grating strain gauge assembly for absolute gauging of strain
US10731969B2 (en) * 2015-05-12 2020-08-04 Nutech Ventures, Inc. In-line fiber sensing, noise cancellation and strain detection
CN105180977B (en) * 2015-05-27 2017-08-25 三峡大学 A kind of single fiber Michelson interference sensor and sensor-based system
CN113686368A (en) * 2021-08-24 2021-11-23 中北大学 Optical fiber sensor demodulation system and demodulation method for obtaining phase change parameters

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH067049B2 (en) * 1984-08-13 1994-01-26 ユナイテツド テクノロジ−ズ コ−ポレ−シヨン Optical fiber strainmeter for dispersive and spaced analysis
US5042898A (en) * 1989-12-26 1991-08-27 United Technologies Corporation Incorporated Bragg filter temperature compensated optical waveguide device
GB2280968B (en) * 1993-08-12 1996-07-31 Northern Telecom Ltd Chirped optical fibre filter
CA2105605A1 (en) * 1993-09-07 1995-03-08 Zhuo Jun Lu Fiber optic sensor system for strain and temperature measurement
US5399854A (en) * 1994-03-08 1995-03-21 United Technologies Corporation Embedded optical sensor capable of strain and temperature measurement using a single diffraction grating

Also Published As

Publication number Publication date
SE504772C2 (en) 1997-04-21
SE9504601D0 (en) 1995-12-22
WO1997023766A1 (en) 1997-07-03
AU1219897A (en) 1997-07-17

Similar Documents

Publication Publication Date Title
Spammer et al. Merged Sagnac-Michelson interferometer for distributed disturbance detection
US5828059A (en) Transverse strain measurements using fiber optic grating based sensors
US5426297A (en) Multiplexed Bragg grating sensors
US5912999A (en) Method for fabrication of in-line optical waveguide index grating of any length
WO2000033048A3 (en) Fiber optic bragg grating pressure sensor
DE69232744D1 (en) Broadband lasers for fiber optic transmission systems
CN102564317A (en) High-accuracy remote absolute displacement measurement system based on optical fiber composite interference
JP7142510B2 (en) interferometric distance measuring device
WO1992003704A3 (en) Encoded surface position sensor
SE9504601L (en) A fiber optic sensor in the form of a Fabry-Pérot interferometer with one or both beam reflecting elements designed as a Bragg grating
KR920701842A (en) Method of making index grating in optical fiber and quasi-distribution of sensors formed on this fiber
Irawan et al. Performance comparison of TOPAS chirped fiber Bragg grating sensor with Tanh and Gaussian apodization
US5647037A (en) Optical filtering
US7106449B2 (en) Systems and methods for fiber optic devices with reduced thermal sensitivity
JP3612780B2 (en) Optical filter
Kersey Multiplexed Bragg grating fiber sensors
Arce-Diego OTDR interrogation of fiber Bragg gratings for quasi-distributed sensing
Wosinski et al. Experimental system considerations for distributed sensing with grating Fabry-Perot interferometers
Kersey Monitoring structural performance with optical TDR techniques
HOMUTH Fiber optic geophysical sensors(Patent Application)
Kersey et al. Fiber optic interferometer configuration with pump-induced phase carrier
Wada et al. Solid-vibration measurement utilizing current modualted laser diode and Fabry-Perot interferometric sensors composed of low reflective fiber Bragg grating in a polarization-maintaining fiber
Wosinski et al. Fiber gratings for distributed sensors
Giesler et al. Instrumentation concepts for multiplexed Bragg grating sensors
Kersey et al. Nested interferometric sensors utilizing Bragg grating reflectors