GB2126820B - An optical sensing system - Google Patents

An optical sensing system

Info

Publication number
GB2126820B
GB2126820B GB08220793A GB8220793A GB2126820B GB 2126820 B GB2126820 B GB 2126820B GB 08220793 A GB08220793 A GB 08220793A GB 8220793 A GB8220793 A GB 8220793A GB 2126820 B GB2126820 B GB 2126820B
Authority
GB
United Kingdom
Prior art keywords
sensing system
optical sensing
optical
sensing
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
GB08220793A
Other versions
GB2126820A (en
Inventor
Dr John Philip Dakin
Christopher Anthony Wade
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 GB08220793A priority Critical patent/GB2126820B/en
Publication of GB2126820A publication Critical patent/GB2126820A/en
Application granted granted Critical
Publication of GB2126820B publication Critical patent/GB2126820B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB08220793A 1982-07-17 1982-07-17 An optical sensing system Expired GB2126820B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08220793A GB2126820B (en) 1982-07-17 1982-07-17 An optical sensing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08220793A GB2126820B (en) 1982-07-17 1982-07-17 An optical sensing system

Publications (2)

Publication Number Publication Date
GB2126820A GB2126820A (en) 1984-03-28
GB2126820B true GB2126820B (en) 1986-03-26

Family

ID=10531754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08220793A Expired GB2126820B (en) 1982-07-17 1982-07-17 An optical sensing system

Country Status (1)

Country Link
GB (1) GB2126820B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7974182B2 (en) 2004-03-31 2011-07-05 British Telecommunications Public Limited Company Evaluating the position of a disturbance

Families Citing this family (52)

* Cited by examiner, † Cited by third party
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GB8420206D0 (en) * 1984-08-09 1984-09-12 Plessey Co Plc Optical fibres
GB2166020B (en) * 1984-09-29 1988-05-18 Plessey Co Plc Otdr-uses multiple frequencies to detect distortions in an optical fibre
US4825424A (en) * 1985-10-21 1989-04-25 Plessey Overseas Limited Sensing systems
GB2189880B (en) * 1986-04-30 1989-12-28 Plessey Co Plc Optical sensor system
GB2238112B (en) * 1986-11-11 1991-10-09 British Aerospace Measurement of distortion
US5038618A (en) * 1986-11-11 1991-08-13 British Aerospace Public Limited Company Measurement of distortion
GB2197953B (en) * 1986-11-27 1990-06-06 Plessey Co Plc Acoustic sensor
GB2202046A (en) * 1987-03-11 1988-09-14 Plessey Co Plc Optical fibre sensor arrangement
GB8716776D0 (en) * 1987-07-16 1987-11-18 Plessey Co Plc Optical sensing systems
GB2215055B (en) * 1988-02-20 1992-04-01 Stc Plc Optical fibre sensor
GB2256480B (en) * 1991-06-05 1995-02-01 Marconi Gec Ltd Improvements to optical sensors
GB2262803A (en) * 1991-12-24 1993-06-30 Marconi Gec Ltd An optical fibre sensor array
JP3711950B2 (en) 2002-02-28 2005-11-02 横河電機株式会社 Optical pulse tester
US20040057692A1 (en) 2002-08-28 2004-03-25 Ball Laura J. Low loss optical fiber and method for making same
GB2401738A (en) * 2003-05-16 2004-11-17 Radiodetection Ltd Optical fibre sensor
EP1663890B1 (en) 2003-08-29 2020-09-23 Corning Incorporated Optical fiber containing an alkali metal oxide and methods and apparatus for manufacturing same
US7667849B2 (en) 2003-09-30 2010-02-23 British Telecommunications Public Limited Company Optical sensor with interferometer for sensing external physical disturbance of optical communications link
GB0322859D0 (en) 2003-09-30 2003-10-29 British Telecomm Communication
GB0421747D0 (en) 2004-09-30 2004-11-03 British Telecomm Distributed backscattering
EP1794904A1 (en) 2004-09-30 2007-06-13 British Telecommunications Public Limited Company Identifying or locating waveguides
KR20070095909A (en) 2004-12-17 2007-10-01 브리티쉬 텔리커뮤니케이션즈 파블릭 리미티드 캄퍼니 Assessing a network
GB0427733D0 (en) 2004-12-17 2005-01-19 British Telecomm Optical system
US7336365B2 (en) 2005-02-11 2008-02-26 Optoplan As Method and apparatus for suppression of crosstalk and noise in time-division multiplexed interferometric sensor systems
WO2006092606A1 (en) 2005-03-04 2006-09-08 British Telecommunications Public Limited Company Acousto-optical modulator arrangement
GB0504579D0 (en) 2005-03-04 2005-04-13 British Telecomm Communications system
EP1708388A1 (en) 2005-03-31 2006-10-04 British Telecommunications Public Limited Company Communicating information
EP1713301A1 (en) 2005-04-14 2006-10-18 BRITISH TELECOMMUNICATIONS public limited company Method and apparatus for communicating sound over an optical link
EP1729096A1 (en) 2005-06-02 2006-12-06 BRITISH TELECOMMUNICATIONS public limited company Method and apparatus for determining the position of a disturbance in an optical fibre
GB0517210D0 (en) * 2005-08-23 2005-09-28 Qinetiq Ltd Demodulation apparatus
WO2007061561A2 (en) 2005-11-23 2007-05-31 Corning Incorporated Low attenuation non-zero dispersion shifted optical fiber
GB2433112B (en) 2005-12-06 2008-07-09 Schlumberger Holdings Borehole telemetry system
ATE505861T1 (en) 2006-02-24 2011-04-15 British Telecomm DETECTING A FAULT
CA2643345A1 (en) 2006-02-24 2007-08-30 British Telecommunications Public Limited Company Sensing a disturbance
EP1826924A1 (en) 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Sensing a disturbance
EP2002219B1 (en) 2006-04-03 2014-12-03 BRITISH TELECOMMUNICATIONS public limited company Evaluating the position of a disturbance
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
US8770283B2 (en) 2007-11-02 2014-07-08 Schlumberger Technology Corporation Systems and methods for distributed interferometric acoustic monitoring
US7946341B2 (en) 2007-11-02 2011-05-24 Schlumberger Technology Corporation Systems and methods for distributed interferometric acoustic monitoring
GB2462096A (en) 2008-07-23 2010-01-27 Schlumberger Holdings Monitoring of a pipeline pig using external acoustic sensors
US8020616B2 (en) 2008-08-15 2011-09-20 Schlumberger Technology Corporation Determining a status in a wellbore based on acoustic events detected by an optical fiber mechanism
US8401401B2 (en) 2008-10-14 2013-03-19 Schlumberger Technology Corporation Polarization-diverse, heterodyne optical receiving system
US8408064B2 (en) 2008-11-06 2013-04-02 Schlumberger Technology Corporation Distributed acoustic wave detection
US9546548B2 (en) 2008-11-06 2017-01-17 Schlumberger Technology Corporation Methods for locating a cement sheath in a cased wellbore
US9476760B2 (en) 2010-06-25 2016-10-25 Schlumberger Technology Corporation Precision measurements in a fiber optic distributed sensor system
US8584519B2 (en) * 2010-07-19 2013-11-19 Halliburton Energy Services, Inc. Communication through an enclosure of a line
US8924158B2 (en) 2010-08-09 2014-12-30 Schlumberger Technology Corporation Seismic acquisition system including a distributed sensor having an optical fiber
CN104094137A (en) 2012-01-06 2014-10-08 普拉德研究及开发股份有限公司 Optical fiber well deployment for seismic surveying
US9151152B2 (en) 2012-06-20 2015-10-06 Schlumberger Technology Corporation Thermal optical fluid composition detection
US20140167972A1 (en) * 2012-12-13 2014-06-19 General Electric Company Acoustically-responsive optical data acquisition system for sensor data
GB2515574A (en) * 2013-06-28 2014-12-31 Tgs Geophysical Company Ltd Distributed optical sensing
US10359302B2 (en) 2015-12-18 2019-07-23 Schlumberger Technology Corporation Non-linear interactions with backscattered light

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1560124A (en) * 1977-11-03 1980-01-30 Standard Telephones Cables Ltd Optical fibre cable testing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7974182B2 (en) 2004-03-31 2011-07-05 British Telecommunications Public Limited Company Evaluating the position of a disturbance

Also Published As

Publication number Publication date
GB2126820A (en) 1984-03-28

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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: 19920717