KR0139547B1 - Method and system for optical fiber sensing - Google Patents

Method and system for optical fiber sensing

Info

Publication number
KR0139547B1
KR0139547B1 KR89012383A KR890012383A KR0139547B1 KR 0139547 B1 KR0139547 B1 KR 0139547B1 KR 89012383 A KR89012383 A KR 89012383A KR 890012383 A KR890012383 A KR 890012383A KR 0139547 B1 KR0139547 B1 KR 0139547B1
Authority
KR
South Korea
Prior art keywords
optical fiber
fiber sensing
sensing
optical
fiber
Prior art date
Application number
KR89012383A
Other languages
English (en)
Other versions
KR900003653A (ko
Inventor
Lawrence Russell Dunn
Ian Arthur White
Willard Chandier White Iii
Original Assignee
At & T Bell Lab
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 At & T Bell Lab filed Critical At & T Bell Lab
Publication of KR900003653A publication Critical patent/KR900003653A/ko
Application granted granted Critical
Publication of KR0139547B1 publication Critical patent/KR0139547B1/ko

Links

Classifications

    • 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
    • H04B10/03—Arrangements for fault recovery
    • H04B10/032—Arrangements for fault recovery using working and protection systems
    • 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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection
    • 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
    • G01M11/083—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT]
    • 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
    • G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
    • G01M11/331—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face by using interferometer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/4469—Security aspects
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Computer Security & Cryptography (AREA)
  • Burglar Alarm Systems (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Light Guides In General And Applications Therefor (AREA)
KR89012383A 1988-08-31 1989-08-30 Method and system for optical fiber sensing KR0139547B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/238,810 US4904050A (en) 1988-08-31 1988-08-31 Methods of and systems for optical fiber sensing
US238810 1988-08-31

Publications (2)

Publication Number Publication Date
KR900003653A KR900003653A (ko) 1990-03-26
KR0139547B1 true KR0139547B1 (en) 1998-07-01

Family

ID=22899406

Family Applications (1)

Application Number Title Priority Date Filing Date
KR89012383A KR0139547B1 (en) 1988-08-31 1989-08-30 Method and system for optical fiber sensing

Country Status (11)

Country Link
US (1) US4904050A (ko)
EP (1) EP0364093B1 (ko)
JP (1) JPH06103857B2 (ko)
KR (1) KR0139547B1 (ko)
AU (1) AU598718B2 (ko)
CA (1) CA1316235C (ko)
DE (1) DE68923671T2 (ko)
DK (1) DK427189A (ko)
ES (1) ES2075052T3 (ko)
HK (1) HK34096A (ko)
IL (1) IL91463A (ko)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311592A (en) * 1986-06-11 1994-05-10 Mcdonnell Douglas Corporation Sagnac interferometer based secure communication system
GB8728854D0 (en) * 1987-12-10 1988-01-27 British Telecomm Optical device
GB8805844D0 (en) * 1988-03-11 1988-04-13 British Telecomm Detection of stress applied to optical fibre
DE4037077A1 (de) * 1990-11-22 1992-05-27 Hilti Ag Verfahren und einrichtung zur faseroptischen kraftmessung
US5144689A (en) * 1991-07-30 1992-09-01 Fiber Sensys, Inc. Multimode fiber sensor system with sensor fiber coupled to a detection fiber by spacer means
US5355208A (en) * 1992-06-24 1994-10-11 Mason & Hanger National, Inc. Distributed fiber optic sensor for locating and identifying remote disturbances
US5414785A (en) * 1993-09-13 1995-05-09 At&T Corp. Optical data bus having collision detection capability
US5699176A (en) * 1995-11-06 1997-12-16 Lucent Technologies Inc. Upgradable fiber-coax network
US5567933A (en) * 1995-02-14 1996-10-22 Mason & Hanger National, Inc. Optical fiber detection system with disturbance and positive cut-loop detection capabilities
FR2756053B1 (fr) * 1996-11-21 1999-01-29 Quantel Dispositif de detection de dommage dans une fibre optique
US5778114A (en) * 1997-04-18 1998-07-07 Eslambolchi; Hossein Fiber analysis method and apparatus
US5991013A (en) * 1998-10-27 1999-11-23 At&T Corp. Conveyance warning member with sacrificial fiber
US6148123A (en) * 1999-03-17 2000-11-14 At&T Corp Method and apparatus for measuring optical distances
IL154637A0 (en) * 2000-09-05 2003-09-17 Fieldturf Inc Artificial grass for landscaping
GB0322859D0 (en) 2003-09-30 2003-10-29 British Telecomm Communication
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
NL1024456C2 (nl) * 2003-10-06 2005-04-07 Lightspeed Inv S B V Signaalleiding, hekwerk en werkwijze voor het vervaardigen van een hekwerk.
GB0407386D0 (en) 2004-03-31 2004-05-05 British Telecomm Monitoring a communications link
US20050244116A1 (en) * 2004-04-28 2005-11-03 Evans Alan F Cables and cable installations
GB0421747D0 (en) 2004-09-30 2004-11-03 British Telecomm Distributed backscattering
WO2006035198A1 (en) * 2004-09-30 2006-04-06 British Telecommunications Public Limited Company Identifying or locating waveguides
US20060071770A1 (en) * 2004-10-04 2006-04-06 Frank Giotto Fiber optic cable sensor for movable objects
KR20070095909A (ko) 2004-12-17 2007-10-01 브리티쉬 텔리커뮤니케이션즈 파블릭 리미티드 캄퍼니 네트워크 평가 방법
GB0427733D0 (en) 2004-12-17 2005-01-19 British Telecomm Optical system
EP1853964B1 (en) 2005-03-04 2009-06-24 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
EP1987317B1 (en) 2006-02-24 2013-07-17 BRITISH TELECOMMUNICATIONS public limited company Sensing a disturbance
EP1989797B1 (en) 2006-02-24 2011-04-13 BRITISH TELECOMMUNICATIONS public limited company Sensing a disturbance
EP1826924A1 (en) 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Sensing a disturbance
US8670662B2 (en) 2006-04-03 2014-03-11 British Telecommunications Public Limited Company Evaluating the position of an optical fiber disturbance
US8740141B2 (en) * 2006-10-23 2014-06-03 Tarkett Inc. Aircraft arrestor system and method of decelerating an aircraft
GB2443661B (en) * 2006-11-08 2011-08-31 Polarmetrix Ltd Detecting a disturbance in the phase of light propogating in an optical waveguide
WO2010034988A1 (en) * 2008-09-23 2010-04-01 Schlumberger Holdings Limited Redundant optical fiber system and method for remotely monitoring the condition of a pipeline
US8593621B2 (en) 2010-04-30 2013-11-26 International Business Machines Corporation Testing an optical fiber connection
CN102332197B (zh) * 2011-08-18 2013-10-09 黄力华 一种高精度光学安全保卫系统
US20130243367A1 (en) * 2012-03-16 2013-09-19 William Redvers Belisle Fiber Optic Turf Blade Contact and Movement Sensor
CN103617685B (zh) * 2013-12-09 2016-02-24 中国船舶重工集团公司第七〇五研究所 一种基于光纤振动传感报警系统的自学习算法
CN106051468A (zh) * 2016-06-08 2016-10-26 无锡亚天光电科技有限公司 一种分布式光纤管道安全预警系统的报警模式分析算法
KR101861321B1 (ko) * 2018-01-22 2018-05-28 주식회사 두리번테크 듀얼 펄스를 이용한 비상상황 모니터링 시스템
US11018778B1 (en) 2020-05-20 2021-05-25 Verizon Patent And Licensing Inc. System and method to prevent unauthorized voice detection via fiber links
US11611393B1 (en) * 2021-09-08 2023-03-21 Subcom, Llc Spatially resolved monitoring of cable perturbations using multichannel information

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342907A (en) * 1977-12-12 1982-08-03 Pedro B. Macedo Optical sensing apparatus and method
AU525304B2 (en) * 1978-06-13 1982-10-28 Amalgamated Wireless (Australasia) Limited Optical fibre communication links
US4299490A (en) * 1978-12-07 1981-11-10 Mcdonnell Douglas Corporation Phase nulling optical gyro
EP0049979B1 (en) * 1980-10-10 1987-03-18 Pilkington P.E. Limited Intruder detection security system
US4375680A (en) * 1981-01-16 1983-03-01 Mcdonnell Douglas Corporation Optical acoustic sensor
US4775214A (en) * 1983-12-21 1988-10-04 Rosemount Inc. Wavelength coded resonant optical sensor
DK155238C (da) * 1985-09-06 1989-07-10 Nordiske Kabel Traad Fremgangsmaade ved signalbehandling af reflekteredeimpulser samt apparatur til udoevelse af fremgangsmaaden
US4775216A (en) * 1987-02-02 1988-10-04 Litton Systems, Inc. Fiber optic sensor array and method
GB8709900D0 (en) * 1987-04-27 1987-08-05 British Telecomm Surveillance system

Also Published As

Publication number Publication date
DE68923671D1 (de) 1995-09-07
HK34096A (en) 1996-03-08
DE68923671T2 (de) 1996-01-18
DK427189A (da) 1990-03-01
AU4090689A (en) 1990-03-08
EP0364093B1 (en) 1995-08-02
JPH02119329A (ja) 1990-05-07
KR900003653A (ko) 1990-03-26
CA1316235C (en) 1993-04-13
DK427189D0 (da) 1989-08-30
EP0364093A3 (en) 1991-04-24
AU598718B2 (en) 1990-06-28
JPH06103857B2 (ja) 1994-12-14
EP0364093A2 (en) 1990-04-18
IL91463A (en) 1994-05-30
US4904050A (en) 1990-02-27
US4904050B1 (ko) 1992-07-28
ES2075052T3 (es) 1995-10-01
IL91463A0 (en) 1990-04-29

Similar Documents

Publication Publication Date Title
KR0139547B1 (en) Method and system for optical fiber sensing
GB8819950D0 (en) Sensing method employing fibre optic sensor system
IL90679A0 (en) Optical fibre sensors and methods for sensing
EP0277698A3 (en) Fiber optic sensor array and method
GB8819469D0 (en) Fibre optic sensor
AU641923B2 (en) Fiber optic damage detection system
AU3883189A (en) Optical fiber distribution system for an optical fiber sensor
HK1015179A1 (en) Optical element and system
GB8705772D0 (en) Optical fibre sensing system
GB8609732D0 (en) Optical fibre sensing systems
EP0481570A3 (en) Optical fiber and apparatus for producing same
GB8816064D0 (en) Optical system
HU9200779D0 (en) Method and device for splitting optical fibres
EP0244721A3 (en) Method and system for optical transmission measurement
GB2215055B (en) Optical fibre sensor
AR243791A1 (es) Metodo y aparato para seccionar una fibra optica.
GB2217010B (en) Optical measuring apparatus and method
EP0371816A3 (en) Sensing method using optical fibres
EP0438237A3 (en) Apparatus and method for multiplexing fiber optic sensors
GB9106787D0 (en) Optical fibre point and distributed measurement apparatus and method
AU579041B2 (en) Method of and apparatus for fiber optic sensing
GB8804168D0 (en) Cladding system
GB8801999D0 (en) Optical sensing apparatus
EP0326341A3 (en) Optical detection and control system
AU3047789A (en) Fiber optic beam-imaging apparatus and method

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20010302

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee