DK3895342T3 - Fremgangsmåde og anordning til måling af fysisk mængde på grundlag af rayleigh-bagudspredning - Google Patents

Fremgangsmåde og anordning til måling af fysisk mængde på grundlag af rayleigh-bagudspredning Download PDF

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Publication number
DK3895342T3
DK3895342T3 DK18829779.0T DK18829779T DK3895342T3 DK 3895342 T3 DK3895342 T3 DK 3895342T3 DK 18829779 T DK18829779 T DK 18829779T DK 3895342 T3 DK3895342 T3 DK 3895342T3
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DK
Denmark
Prior art keywords
physical quantity
quantity based
measuring physical
rayleigh backscatter
backscatter
Prior art date
Application number
DK18829779.0T
Other languages
English (en)
Inventor
Etienne Rochat
Original Assignee
Omnisens S A
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 Omnisens S A filed Critical Omnisens S A
Application granted granted Critical
Publication of DK3895342T3 publication Critical patent/DK3895342T3/da

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
    • 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
    • G01D5/35338—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 other arrangements than interferometer arrangements
    • G01D5/35354—Sensor working in reflection
    • G01D5/35358—Sensor working in reflection using backscattering to detect the measured quantity
    • G01D5/35361—Sensor working in reflection using backscattering to detect the measured quantity using elastic backscattering to detect the measured quantity, e.g. using Rayleigh backscattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
    • G01M11/3118—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR using coded light-pulse sequences
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
    • G01M11/3127—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR using multiple or wavelength variable input source
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G01M11/3172—Reflectometers detecting the back-scattered light in the frequency-domain, e.g. OFDR, FMCW, heterodyne detection

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Optical Transform (AREA)
DK18829779.0T 2018-12-14 2018-12-14 Fremgangsmåde og anordning til måling af fysisk mængde på grundlag af rayleigh-bagudspredning DK3895342T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/084861 WO2020119915A1 (en) 2018-12-14 2018-12-14 Process and device for measurement of physical quantity based on rayleigh backscattering

Publications (1)

Publication Number Publication Date
DK3895342T3 true DK3895342T3 (da) 2023-04-11

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ID=64949237

Family Applications (1)

Application Number Title Priority Date Filing Date
DK18829779.0T DK3895342T3 (da) 2018-12-14 2018-12-14 Fremgangsmåde og anordning til måling af fysisk mængde på grundlag af rayleigh-bagudspredning

Country Status (4)

Country Link
US (1) US11265079B2 (da)
EP (1) EP3895342B1 (da)
DK (1) DK3895342T3 (da)
WO (1) WO2020119915A1 (da)

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CN113517922B (zh) * 2020-04-09 2022-09-02 华为技术有限公司 一种信号检测方法和光时域反射仪
CN112461353B (zh) * 2020-12-15 2022-07-12 成都陆迪盛华科技有限公司 一种在光放大下分布式光纤振动传感的编码装置及方法
US20220260394A1 (en) * 2021-02-12 2022-08-18 Clemson University Phase demodulation by frequency chirping in coherence microwave photonic interferometry
US20230119927A1 (en) * 2021-10-18 2023-04-20 Nec Laboratories America, Inc Distributed fiber optic sensing enabled self-coherent detection for data centers
GB2618376A (en) * 2022-05-06 2023-11-08 Optasense Holdings Ltd Fibre optic sensing
EP4390324A1 (en) * 2022-12-21 2024-06-26 Omnisens S.A. Addressing device, optical fiber associated with an addressing device, and system and method for addressing optical fibers
US20240344878A1 (en) * 2023-04-11 2024-10-17 Exfo Inc. Method and apparatus of distributed acoustic sensing

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Publication number Priority date Publication date Assignee Title
GB9700269D0 (en) * 1997-01-08 1997-02-26 York Sensors Ltd Improvements to optical time domain reflectometry
US20100078506A1 (en) 2008-09-30 2010-04-01 General Electric Company Circumferential fuel circuit divider
GB2489749B (en) 2011-04-08 2016-01-20 Optasense Holdings Ltd Fibre optic distributed sensing
CN102761363B (zh) 2011-04-27 2016-03-30 华为海洋网络有限公司 一种光时域反射仪信号检测方法及装置
US20130113629A1 (en) * 2011-11-04 2013-05-09 Schlumberger Technology Corporation Phase sensitive coherent otdr with multi-frequency interrogation
CN102412894B (zh) * 2011-11-14 2015-07-08 南京大学 多频探测光时分复用相干光时域反射仪方法和装置
CN102571200A (zh) * 2012-01-09 2012-07-11 南京大学 多频探测光相干光时域反射仪方法和装置
US9435712B2 (en) * 2014-12-29 2016-09-06 Verizon Patent And Licensing Inc. OTDR signal injection for multi-band optical power balancing
US10359302B2 (en) * 2015-12-18 2019-07-23 Schlumberger Technology Corporation Non-linear interactions with backscattered light
FR3066280B1 (fr) * 2017-05-11 2019-09-13 Febus Optics Dispositif optoelectronique de mesure repartie par fibre optique
CN107402029B (zh) * 2017-08-08 2019-08-20 电子科技大学 利用正交信号提高分布式光纤传感测量速度的方法及系统
GB201811640D0 (en) * 2018-07-16 2018-08-29 Optasense Holdings Ltd Distributed fibre optic sensing
US11320304B2 (en) * 2019-05-22 2022-05-03 Nec Corporation Multi-frequency coherent distributed acoustic sensing (DAS) with single transmitter / receiver pair using offset Tx / Rx frequency framing scheme

Also Published As

Publication number Publication date
EP3895342B1 (en) 2023-02-01
US20210359755A1 (en) 2021-11-18
WO2020119915A1 (en) 2020-06-18
EP3895342A1 (en) 2021-10-20
US11265079B2 (en) 2022-03-01

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