JPWO2021193807A1 - - Google Patents

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Publication number
JPWO2021193807A1
JPWO2021193807A1 JP2022510651A JP2022510651A JPWO2021193807A1 JP WO2021193807 A1 JPWO2021193807 A1 JP WO2021193807A1 JP 2022510651 A JP2022510651 A JP 2022510651A JP 2022510651 A JP2022510651 A JP 2022510651A JP WO2021193807 A1 JPWO2021193807 A1 JP WO2021193807A1
Authority
JP
Japan
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.)
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Application number
JP2022510651A
Other languages
Japanese (ja)
Other versions
JPWO2021193807A5 (https=
JP7343043B2 (ja
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.)
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Publication date
Application filed filed Critical
Publication of JPWO2021193807A1 publication Critical patent/JPWO2021193807A1/ja
Publication of JPWO2021193807A5 publication Critical patent/JPWO2021193807A5/ja
Priority to JP2023112806A priority Critical patent/JP7517555B2/ja
Application granted granted Critical
Publication of JP7343043B2 publication Critical patent/JP7343043B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
    • G01L5/105—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using electro-optical means
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • G01K11/324—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Raman scattering
    • 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
    • G01M11/08—Testing mechanical properties
    • G01M11/088—Testing mechanical properties of optical fibres; Mechanical features associated with the optical testing of optical fibres
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres
    • 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
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres
    • G01N2021/4742—Details of optical heads therefor, e.g. using optical fibres comprising optical fibres
    • G01N2021/4745—Fused bundle, i.e. for backscatter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Light Guides In General And Applications Therefor (AREA)
JP2022510651A 2020-03-26 2021-03-25 特定システム、特定装置および特定方法 Active JP7343043B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023112806A JP7517555B2 (ja) 2020-03-26 2023-07-10 特定システム、特定装置および特定方法

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020055613 2020-03-26
JP2020055613 2020-03-26
PCT/JP2021/012488 WO2021193807A1 (ja) 2020-03-26 2021-03-25 特定システム、特定装置および特定方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2023112806A Division JP7517555B2 (ja) 2020-03-26 2023-07-10 特定システム、特定装置および特定方法

Publications (3)

Publication Number Publication Date
JPWO2021193807A1 true JPWO2021193807A1 (https=) 2021-09-30
JPWO2021193807A5 JPWO2021193807A5 (https=) 2022-10-12
JP7343043B2 JP7343043B2 (ja) 2023-09-12

Family

ID=77891876

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2022510651A Active JP7343043B2 (ja) 2020-03-26 2021-03-25 特定システム、特定装置および特定方法
JP2023112806A Active JP7517555B2 (ja) 2020-03-26 2023-07-10 特定システム、特定装置および特定方法

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2023112806A Active JP7517555B2 (ja) 2020-03-26 2023-07-10 特定システム、特定装置および特定方法

Country Status (3)

Country Link
US (1) US20230078369A1 (https=)
JP (2) JP7343043B2 (https=)
WO (1) WO2021193807A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117830915A (zh) * 2022-09-29 2024-04-05 华为技术有限公司 一种光缆下垂识别方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02187641A (ja) * 1989-01-17 1990-07-23 Fujikura Ltd 光ファイバ線路状態の監視方法
JPH09105701A (ja) * 1995-10-09 1997-04-22 Fujikura Ltd 光ファイバ歪測定装置
JP2006145465A (ja) * 2004-11-24 2006-06-08 Japan Atomic Energy Agency マルチ情報計測用光ファイバ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080011514A1 (en) * 2006-07-14 2008-01-17 Tenvera, Inc. Optical Fiber Distribution Apparatus and Method
JP4819165B2 (ja) * 2010-01-13 2011-11-24 株式会社日立製作所 光通信システム及びその監視方法
JP6277141B2 (ja) * 2015-02-02 2018-02-07 日本電信電話株式会社 分岐を有する長距離光ファイバの試験方法、及び装置
US10205552B2 (en) * 2017-01-20 2019-02-12 Cox Communications, Inc. Optical communications module link, systems, and methods
US10571509B2 (en) * 2017-10-17 2020-02-25 Facebook, Inc. Systems and methods for distributed sensing of a powerline conductor
US11512584B2 (en) * 2020-01-31 2022-11-29 Halliburton Energy Services, Inc. Fiber optic distributed temperature sensing of annular cement curing using a cement plug deployment system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02187641A (ja) * 1989-01-17 1990-07-23 Fujikura Ltd 光ファイバ線路状態の監視方法
JPH09105701A (ja) * 1995-10-09 1997-04-22 Fujikura Ltd 光ファイバ歪測定装置
JP2006145465A (ja) * 2004-11-24 2006-06-08 Japan Atomic Energy Agency マルチ情報計測用光ファイバ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
岡本 達也，外２名: "光ファイバ振動分布測定による架空ケーブル弛み区間の特定", 電子情報通信学会２０１９年総合大会講演論文集, vol. B-13-11, JPN6021021555, 2019, pages 303, ISSN: 0005054801 *

Also Published As

Publication number Publication date
WO2021193807A1 (ja) 2021-09-30
US20230078369A1 (en) 2023-03-16
JP7517555B2 (ja) 2024-07-17
JP7343043B2 (ja) 2023-09-12
JP2023145498A (ja) 2023-10-11

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