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GB2165118B - Otdr for sensing distortions in optical fibres - Google Patents

Otdr for sensing distortions in optical fibres

Info

Publication number
GB2165118B
GB2165118B GB08424671A GB8424671A GB2165118B GB 2165118 B GB2165118 B GB 2165118B GB 08424671 A GB08424671 A GB 08424671A GB 8424671 A GB8424671 A GB 8424671A GB 2165118 B GB2165118 B GB 2165118B
Authority
GB
United Kingdom
Prior art keywords
otdr
optical fibres
distortions
sensing
sensing distortions
Prior art date
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.)
Expired
Application number
GB08424671A
Other versions
GB2165118A (en
Inventor
Shane Thornton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB08424671A priority Critical patent/GB2165118B/en
Publication of GB2165118A publication Critical patent/GB2165118A/en
Application granted granted Critical
Publication of GB2165118B publication Critical patent/GB2165118B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01M11/30—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
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/499—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00 using polarisation effects

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Optical Transform (AREA)
GB08424671A 1984-09-29 1984-09-29 Otdr for sensing distortions in optical fibres Expired GB2165118B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08424671A GB2165118B (en) 1984-09-29 1984-09-29 Otdr for sensing distortions in optical fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08424671A GB2165118B (en) 1984-09-29 1984-09-29 Otdr for sensing distortions in optical fibres

Publications (2)

Publication Number Publication Date
GB2165118A GB2165118A (en) 1986-04-03
GB2165118B true GB2165118B (en) 1988-01-20

Family

ID=10567482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08424671A Expired GB2165118B (en) 1984-09-29 1984-09-29 Otdr for sensing distortions in optical fibres

Country Status (1)

Country Link
GB (1) GB2165118B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189880B (en) * 1986-04-30 1989-12-28 Plessey Co Plc Optical sensor system
IT1190599B (en) * 1986-06-17 1988-02-16 Cselt Centro Studi Lab Telecom PROCEDURE AND DEVICE FOR THE MEASUREMENT OF THE BEATENING LENGTH OF THE POLARIZATION IN SINGLE-MODE HIGH-BIFRANFENCE OPTICAL FIBERS
US5038618A (en) * 1986-11-11 1991-08-13 British Aerospace Public Limited Company Measurement of distortion
GB2238112B (en) * 1986-11-11 1991-10-09 British Aerospace Measurement of distortion
GB2202046A (en) * 1987-03-11 1988-09-14 Plessey Co Plc Optical fibre sensor arrangement
US5189299A (en) * 1988-06-20 1993-02-23 Virginia Polytechnic Institute & State University Method and apparatus for sensing strain in a waveguide
GB9007615D0 (en) * 1990-04-04 1990-05-30 Smiths Industries Plc Optical multiplexing
JPH04138331A (en) * 1990-09-28 1992-05-12 Ando Electric Co Ltd Optical pulse tester using heterodyne light receiving
CA2048278C (en) * 1990-11-07 2002-07-23 Wayne V. Sorin Polarization independent optical coherence-domain reflectometry
US5202745A (en) * 1990-11-07 1993-04-13 Hewlett-Packard Company Polarization independent optical coherence-domain reflectometry
GB9409553D0 (en) * 1994-04-28 1994-06-29 British Aerospace Crack detection system
US5557400A (en) * 1995-02-15 1996-09-17 Hewlett-Packard Company Multiplexed sensing using optical coherence reflectrometry
JP3392368B2 (en) * 1999-04-22 2003-03-31 安藤電気株式会社 Optical fiber strain measuring device and optical fiber strain measuring method
GB2401738A (en) * 2003-05-16 2004-11-17 Radiodetection Ltd Optical fibre sensor
GB2442745B (en) 2006-10-13 2011-04-06 At & T Corp Method and apparatus for acoustic sensing using multiple optical pulses
GB2442746B (en) 2006-10-13 2011-04-06 At & T Corp Method and apparatus for acoustic sensing using multiple optical pulses
CN102426363B (en) * 2011-08-31 2013-03-20 桂林聚联科技有限公司 A Method of Improving Event Distance Accuracy Based on Phase Shift Technology in OTDR Design
CN107369281B (en) * 2017-08-14 2022-10-28 桂林聚联科技有限公司 Deformation formula optic fibre rail device

Also Published As

Publication number Publication date
GB2165118A (en) 1986-04-03

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920929