JPWO2022180834A1 - - Google Patents

Info

Publication number
JPWO2022180834A1
JPWO2022180834A1 JP2023501994A JP2023501994A JPWO2022180834A1 JP WO2022180834 A1 JPWO2022180834 A1 JP WO2022180834A1 JP 2023501994 A JP2023501994 A JP 2023501994A JP 2023501994 A JP2023501994 A JP 2023501994A JP WO2022180834 A1 JPWO2022180834 A1 JP WO2022180834A1
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.)
Pending
Application number
JP2023501994A
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 filed Critical
Publication of JPWO2022180834A1 publication Critical patent/JPWO2022180834A1/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
    • 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
    • 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]

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
JP2023501994A 2021-02-26 2021-02-26 Pending JPWO2022180834A1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/007519 WO2022180834A1 (ja) 2021-02-26 2021-02-26 コヒーレント光計測装置、光線路試験システム及び方法

Publications (1)

Publication Number Publication Date
JPWO2022180834A1 true JPWO2022180834A1 (ja) 2022-09-01

Family

ID=83048703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2023501994A Pending JPWO2022180834A1 (ja) 2021-02-26 2021-02-26

Country Status (5)

Country Link
US (1) US20240118127A1 (ja)
EP (1) EP4300030A1 (ja)
JP (1) JPWO2022180834A1 (ja)
CN (1) CN116829900A (ja)
WO (1) WO2022180834A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220326070A1 (en) * 2021-04-12 2022-10-13 Nec Laboratories America, Inc. Fiber optic sensing for reduced field work conflicts
WO2024057492A1 (ja) * 2022-09-15 2024-03-21 日本電信電話株式会社 振動分布波形から電柱位置を特定する方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6494459B2 (ja) 2015-07-24 2019-04-03 日本電信電話株式会社 振動分布測定方法及び振動分布測定装置
JP6824861B2 (ja) * 2017-10-25 2021-02-03 日本電信電話株式会社 Ｏｔｄｒ装置
JP6774451B2 (ja) * 2018-03-06 2020-10-21 日本電信電話株式会社 光ファイバケーブル監視方法および光ファイバケーブル監視システム
JP6974747B2 (ja) 2018-09-20 2021-12-01 日本電信電話株式会社 マンホール位置特定方法及びマンホール位置特定システム
WO2020059640A1 (ja) * 2018-09-20 2020-03-26 日本電信電話株式会社 マンホール位置特定方法及びマンホール位置特定システム
JP7111045B2 (ja) 2019-04-03 2022-08-02 日本電信電話株式会社 位相測定方法及び信号処理装置

Also Published As

Publication number Publication date
CN116829900A (zh) 2023-09-29
US20240118127A1 (en) 2024-04-11
EP4300030A1 (en) 2024-01-03
WO2022180834A1 (ja) 2022-09-01

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