JPWO2021234887A1 - - Google Patents

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Publication number
JPWO2021234887A1
JPWO2021234887A1 JP2022524784A JP2022524784A JPWO2021234887A1 JP WO2021234887 A1 JPWO2021234887 A1 JP WO2021234887A1 JP 2022524784 A JP2022524784 A JP 2022524784A JP 2022524784 A JP2022524784 A JP 2022524784A JP WO2021234887 A1 JPWO2021234887 A1 JP WO2021234887A1
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JP
Japan
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JP2022524784A
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JP7468638B2 (ja
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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
    • G01D5/35338—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
    • G01D5/35364—Sensor working in reflection using backscattering to detect the measured quantity using inelastic backscattering to detect the measured quantity, e.g. using Brillouin or Raman backscattering

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)
JP2022524784A 2020-05-21 2020-05-21 ブリルアン光センシング装置および光センシング方法 Active JP7468638B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/020044 WO2021234887A1 (ja) 2020-05-21 2020-05-21 ブリルアン光センシング装置および光センシング方法

Publications (2)

Publication Number Publication Date
JPWO2021234887A1 true JPWO2021234887A1 (ja) 2021-11-25
JP7468638B2 JP7468638B2 (ja) 2024-04-16

Family

ID=78708288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022524784A Active JP7468638B2 (ja) 2020-05-21 2020-05-21 ブリルアン光センシング装置および光センシング方法

Country Status (3)

Country Link
US (1) US11965758B2 (ja)
JP (1) JP7468638B2 (ja)
WO (1) WO2021234887A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11965758B2 (en) * 2020-05-21 2024-04-23 Nippon Telegraph And Telephone Corporation Brillouin optical sensing device and optical sensing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009098020A (ja) * 2007-10-17 2009-05-07 Fujikura Ltd 分布型光ファイバ温度センサ
CN104729751A (zh) * 2013-12-18 2015-06-24 广西大学 一种基于布里渊散射分布式光纤温度和应力传感器
JP2016102689A (ja) * 2014-11-27 2016-06-02 日本電信電話株式会社 光ファイバの曲げ形状測定装置及びその曲げ形状測定方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6625365B2 (en) * 1997-05-09 2003-09-23 Sumitomo Electric Industries, Ltd. Overcoated fiber for use in optical fiber cable
GB2441154B (en) * 2006-08-24 2009-02-18 Schlumberger Holdings Measuring brillouin backscatter from an optical fibre using channelisation
GB2442486B (en) * 2006-10-06 2009-01-07 Schlumberger Holdings Measuring brillouin backscatter from an optical fibre using a tracking signal
JP5053120B2 (ja) * 2008-02-22 2012-10-17 日本電信電話株式会社 光ファイバの後方ブリルアン散乱光測定方法及び装置
JP5521118B2 (ja) * 2011-05-31 2014-06-11 日本電信電話株式会社 光線路特性解析装置及びその解析方法
WO2014012411A1 (zh) * 2012-07-19 2014-01-23 南京大学 基于脉冲编码和相干探测的botda系统
CN104729750A (zh) 2013-12-18 2015-06-24 广西大学 一种基于布里渊散射分布式光纤温度传感器
FR3043457B1 (fr) * 2015-11-06 2020-02-07 Febus Optics Dispositif optoelectronique de mesure repartie par diffusion brillouin.
GB201601060D0 (en) * 2016-01-20 2016-03-02 Fotech Solutions Ltd Distributed optical fibre sensors
JP6552983B2 (ja) * 2016-02-29 2019-07-31 ニューブレクス株式会社 ブリルアン散乱測定方法およびブリルアン散乱測定装置
US11385368B2 (en) * 2017-08-01 2022-07-12 Schlumberger Technology Corporation Simultaneous distributed measurement monitoring over multiple fibers
US11391622B2 (en) * 2019-02-06 2022-07-19 Nec Corporation Optical fiber sensing system with reduced spatial resolution and noise for multiple application uses
JP2021089196A (ja) * 2019-12-04 2021-06-10 横河電機株式会社 光ファイバ特性測定装置及び光ファイバ特性測定方法
US11965758B2 (en) * 2020-05-21 2024-04-23 Nippon Telegraph And Telephone Corporation Brillouin optical sensing device and optical sensing method
JP2023019510A (ja) * 2021-07-29 2023-02-09 横河電機株式会社 光ファイバ特性測定システム
JP7396382B2 (ja) * 2022-03-10 2023-12-12 沖電気工業株式会社 光ファイバセンサ及びブリルアン周波数シフト測定方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009098020A (ja) * 2007-10-17 2009-05-07 Fujikura Ltd 分布型光ファイバ温度センサ
CN104729751A (zh) * 2013-12-18 2015-06-24 广西大学 一种基于布里渊散射分布式光纤温度和应力传感器
JP2016102689A (ja) * 2014-11-27 2016-06-02 日本電信電話株式会社 光ファイバの曲げ形状測定装置及びその曲げ形状測定方法

Also Published As

Publication number Publication date
WO2021234887A1 (ja) 2021-11-25
JP7468638B2 (ja) 2024-04-16
US20230236044A1 (en) 2023-07-27
US11965758B2 (en) 2024-04-23

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