DE602006007442D1 - Akustooptische modulatoranordnung - Google Patents

Akustooptische modulatoranordnung

Info

Publication number
DE602006007442D1
DE602006007442D1 DE602006007442T DE602006007442T DE602006007442D1 DE 602006007442 D1 DE602006007442 D1 DE 602006007442D1 DE 602006007442 T DE602006007442 T DE 602006007442T DE 602006007442 T DE602006007442 T DE 602006007442T DE 602006007442 D1 DE602006007442 D1 DE 602006007442D1
Authority
DE
Germany
Prior art keywords
coupling member
coupling
waveguide
arrangement
akustooptical
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.)
Active
Application number
DE602006007442T
Other languages
English (en)
Inventor
David John Taylor Heatley
Edmund Sergio Sikora
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of DE602006007442D1 publication Critical patent/DE602006007442D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/11Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
    • G02F1/125Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves in an optical waveguide structure

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
DE602006007442T 2005-03-04 2006-03-02 Akustooptische modulatoranordnung Active DE602006007442D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05251319 2005-03-04
PCT/GB2006/000750 WO2006092606A1 (en) 2005-03-04 2006-03-02 Acousto-optical modulator arrangement

Publications (1)

Publication Number Publication Date
DE602006007442D1 true DE602006007442D1 (de) 2009-08-06

Family

ID=34940544

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602006007442T Active DE602006007442D1 (de) 2005-03-04 2006-03-02 Akustooptische modulatoranordnung

Country Status (5)

Country Link
US (1) US7697795B2 (de)
EP (1) EP1853964B1 (de)
AT (1) ATE434774T1 (de)
DE (1) DE602006007442D1 (de)
WO (1) WO2006092606A1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB0407386D0 (en) 2004-03-31 2004-05-05 British Telecomm Monitoring a communications link
GB0421747D0 (en) 2004-09-30 2004-11-03 British Telecomm Distributed backscattering
US7848645B2 (en) 2004-09-30 2010-12-07 British Telecommunications Public Limited Company Identifying or locating waveguides
CA2589792A1 (en) * 2004-12-17 2006-06-22 British Telecommunications Public Limited Company Assessing a network
GB0427733D0 (en) * 2004-12-17 2005-01-19 British Telecomm Optical system
GB0504579D0 (en) * 2005-03-04 2005-04-13 British Telecomm Communications system
EP1708388A1 (de) 2005-03-31 2006-10-04 British Telecommunications Public Limited Company Verfahren zum Mitteilen von Informationen
EP1713301A1 (de) 2005-04-14 2006-10-18 BRITISH TELECOMMUNICATIONS public limited company Verfahren und Gerät zur Schallübertragung über eine optische Verbindung
EP1729096A1 (de) * 2005-06-02 2006-12-06 BRITISH TELECOMMUNICATIONS public limited company Verfahren und Vorrichtung zur Ermittlung der Stelle einer Störung in einer optischen Faser
EP1826924A1 (de) * 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Abtastung einer Störung
ATE505861T1 (de) * 2006-02-24 2011-04-15 British Telecomm Erfassen einer störung
EP1987317B1 (de) * 2006-02-24 2013-07-17 BRITISH TELECOMMUNICATIONS public limited company Erfassen einer störung
EP2002219B1 (de) * 2006-04-03 2014-12-03 BRITISH TELECOMMUNICATIONS public limited company Auswertung der position einer störung
GB0905986D0 (en) * 2009-04-07 2009-05-20 Qinetiq Ltd Remote sensing
CN114563026A (zh) * 2009-05-27 2022-05-31 希里克萨有限公司 光学感测的方法及装置
EP2721751B1 (de) * 2011-06-20 2017-08-16 British Telecommunications Public Limited Company Kommunikationsnetzwerk
KR20170009158A (ko) 2015-07-15 2017-01-25 허정규 수중위치 추적을 위한 가변음향 송수신장치
US10598969B2 (en) 2016-07-13 2020-03-24 Technology Innovation Momentum Fund (Israel) Limited Partnership Coupling sensor information to an optical cable using ultrasonic vibrations
EP3577799B1 (de) 2017-02-01 2023-08-30 British Telecommunications public limited company Faseroptische ereignisortung
CN111492599A (zh) 2018-01-09 2020-08-04 英国电讯有限公司 光数据传输系统
FR3135324A1 (fr) 2022-05-06 2023-11-10 Osmos Group Procédé, système et capteur pour surveiller une structure par fibre optique

Family Cites Families (129)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418506A1 (fr) 1978-02-28 1979-09-21 Comp Generale Electricite Dispositif pour detecter la presence d'un objet le long d'une ligne
GB2019561B (en) 1978-04-20 1982-09-02 Davies D E N Telecommunication systems
US4443700A (en) 1980-02-01 1984-04-17 Pedro B. Macedo Optical sensing apparatus and method
US4297887A (en) 1980-02-19 1981-11-03 The United States Of America As Represented By The Secretary Of The Navy High-sensitivity, low-noise, remote optical fiber
US4654520A (en) 1981-08-24 1987-03-31 Griffiths Richard W Structural monitoring system using fiber optics
US4397551A (en) 1981-10-29 1983-08-09 Northern Telecom Limited Method and apparatus for optical fiber fault location
US4463451A (en) 1982-01-11 1984-07-31 The Standard Oil Company System for seismic digital data acquisition over water covered areas
GB2113417A (en) 1982-01-14 1983-08-03 Standard Telephones Cables Ltd Acousto-optical fibre transducer
US4572949A (en) 1982-04-14 1986-02-25 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic sensor for detecting very small displacements of a surface
GB2126820B (en) 1982-07-17 1986-03-26 Plessey Co Plc An optical sensing system
US5363463A (en) 1982-08-06 1994-11-08 Kleinerman Marcos Y Remote sensing of physical variables with fiber optic systems
US4538103A (en) 1982-08-30 1985-08-27 John Cappon Time domain reflectometer apparatus for identifying the location of cable defects
US4593385A (en) 1983-05-19 1986-06-03 The Charles Stark Draper Laboratory Fiber optic sensor lead fiber noise cancellation
JPS6085312A (ja) 1983-10-17 1985-05-14 Hitachi Ltd 固体化干渉計
US5991479A (en) 1984-05-14 1999-11-23 Kleinerman; Marcos Y. Distributed fiber optic sensors and systems
DE3421056A1 (de) 1984-06-06 1985-12-12 Feldmühle AG, 4000 Düsseldorf Kieferimplantat zur aufnahme eines zahnersatztraegers
US4770535A (en) 1985-02-08 1988-09-13 The Board Of Trustees Of The Leland Stanford Junior University Distributed sensor array and method using a pulsed signal source
US4697926A (en) 1985-02-08 1987-10-06 The Board Of Trustees Of The Leland Stanford Junior University Coherent distributed sensor and method using short coherence length sources
DE3506884A1 (de) 1985-02-27 1986-08-28 Philips Patentverwaltung Gmbh, 2000 Hamburg Optisches zeitbereichsreflektometer mit heterodyn-empfang
FR2578645B1 (fr) 1985-03-07 1987-03-20 Sopha Praxis Dispositif optique de detection d'effort, procede de mesure d'effort au moyen dudit dispositif et leur application a une balance
US5051965A (en) 1985-04-19 1991-09-24 Western Atlas International, Inc. Acousto-optical marine sensor array
US4688200A (en) 1985-09-18 1987-08-18 Western Geophysical Company Of America Optical system for detecting acoustic wave energy in a fluid medium
US4649529A (en) 1985-12-02 1987-03-10 Exxon Production Research Co. Multi-channel fiber optic sensor system
US5223967A (en) 1986-06-11 1993-06-29 Mcdonnell Douglas Corporation Secure communications system
US5311592A (en) 1986-06-11 1994-05-10 Mcdonnell Douglas Corporation Sagnac interferometer based secure communication system
JPH0820506B2 (ja) 1986-09-10 1996-03-04 海洋科学技術センター 海洋音響トモグラフィーデータ伝送装置
IL80276A0 (en) 1986-10-10 1987-01-30 Ispra Israel Prod Res Co Ltd Wallpaper comprising an optical fibre
GB8626224D0 (en) 1986-11-03 1986-12-03 Secr Defence Fibre optic communication system
GB8706272D0 (en) 1987-03-17 1987-04-23 Sieger Ltd Fibre optic telemetry
GB8825481D0 (en) 1988-11-01 1988-12-07 British Telecomm Interferrometer
US4976507A (en) 1988-06-20 1990-12-11 Mcdonnell Douglas Corporation Sagnac distributed sensor
US4907856A (en) * 1988-08-29 1990-03-13 Motorola, Inc. Acoustooptic transducer arrangement for optical fibers
US4904050A (en) 1988-08-31 1990-02-27 American Telephone And Telegraph Company, At&T Bell Laboratories Methods of and systems for optical fiber sensing
FR2636778B1 (fr) 1988-08-31 1990-12-14 Sgs Thomson Microelectronics Transistor mos composite et application a une diode roue libre
US4900921A (en) 1988-09-19 1990-02-13 Simmonds Precision Products, Inc. System and method for opto-acoustic liquid quantity measurement and transducer therefor
DE3832569A1 (de) 1988-09-24 1990-03-29 Philips Patentverwaltung Faseroptischer sensor
US5191614A (en) 1988-11-14 1993-03-02 Mcdonnell Douglas Corporation Secure communication system
GB8828408D0 (en) 1988-12-06 1989-01-05 British Telecomm Loss detector
DE377549T1 (de) 1989-01-03 1990-11-08 Marcos Y. Southbridge Mass. Us Kleinerman Fernmessung physikalischer variablen mit faseroptischen systemen.
US4991923A (en) * 1989-01-17 1991-02-12 Board Of Trustees Of The Leland Stanford Junior University Acousto-optic modulator for optical fibers using Hertzian contact with a grooved transducer substrate
DE69019865T2 (de) 1989-03-02 1996-02-15 Furukawa Electric Co Ltd Verfahren und Vorrichtung zum Identifizieren eines optischen Übertragungsmediums.
US5015842A (en) 1989-06-01 1991-05-14 United Technologies Corporation High density fiber optic damage detection system
US4994668A (en) 1989-09-01 1991-02-19 The United States Of America As Represented By The Secretary Of The Navy Planar fiber-optic interferometric acoustic sensor
US5046848A (en) 1989-09-08 1991-09-10 Mcdonnell Douglas Corporation Fiber optic detection system using a Sagnac interferometer
GB9007974D0 (en) 1990-04-09 1990-06-06 British Telecomm Loss detection
US5104391A (en) * 1990-10-30 1992-04-14 Advanced Cardiovascular Systems Optical fiber breakage detection system
JPH04204805A (ja) 1990-11-30 1992-07-27 Furukawa Electric Co Ltd:The 光ケーブル識別方法
US5093568A (en) 1990-12-14 1992-03-03 John Maycock Monitoring system for fiber optic cables utilizing an OTDR for detection of signal loss and automatic location of faults in the cable
US5140559A (en) 1991-02-21 1992-08-18 The United States Of America As Represented By The Secretary Of The Navy Low flow-noise conformal fiber optic hydrophone
US5173743A (en) 1991-05-28 1992-12-22 Litton Systems, Inc. Fiber optical time-division-multiplexed unbalanced pulsed interferometer with polarization fading compensation
US5194847A (en) 1991-07-29 1993-03-16 Texas A & M University System Apparatus and method for fiber optic intrusion sensing
WO1993003400A1 (fr) 1991-08-02 1993-02-18 The Furukawa Electric Co., Ltd. Procede de sondage d'une ligne de transmission optique
FR2682774B1 (fr) 1991-10-17 1996-02-16 Geophysique Cie Gle Dispositif d'emission acoustique pour sismique marine.
GB2262803A (en) 1991-12-24 1993-06-30 Marconi Gec Ltd An optical fibre sensor array
US5206924A (en) 1992-01-31 1993-04-27 The United States Of America As Represented By The Secretary Of The Navy Fiber optic Michelson sensor and arrays with passive elimination of polarization fading and source feedback isolation
GB9202564D0 (en) 1992-02-07 1992-03-25 Marconi Gec Ltd Optical signal transmission network
AU666382B2 (en) 1992-05-01 1996-02-08 Nippon Telegraph & Telephone Corporation Method for identifying optical line
WO1993025866A1 (en) 1992-06-05 1993-12-23 Monash University Sensing patches utilising incorporated waveguide sensor
US5355208A (en) 1992-06-24 1994-10-11 Mason & Hanger National, Inc. Distributed fiber optic sensor for locating and identifying remote disturbances
FR2694088B1 (fr) 1992-07-27 1994-09-02 France Telecom Système interférométrique de détection et de localisation de défauts réflecteurs de structures guidant la lumière.
US5313266A (en) 1992-08-17 1994-05-17 Keolian Robert M Demodulators for optical fiber interferometers with [3×3] outputs
US5361130A (en) 1992-11-04 1994-11-01 The United States Of America As Represented By The Secretary Of The Navy Fiber grating-based sensing system with interferometric wavelength-shift detection
US5351318A (en) 1993-04-05 1994-09-27 The Board Of Trustees Of The Leland Stanford Jr./University Fiber optic communication system and fiber optic modulator
US5373487A (en) 1993-05-17 1994-12-13 Mason & Hanger National, Inc. Distributed acoustic sensor
US6440457B1 (en) 1993-05-27 2002-08-27 Alza Corporation Method of administering antidepressant dosage form
GB9324333D0 (en) 1993-11-26 1994-01-12 Sensor Dynamics Ltd Measurement of one or more physical parameters
US5473459A (en) 1993-12-03 1995-12-05 Optimux Systems Corporation Optical telecommunications system using phase compensation interferometry
US5691957A (en) 1994-06-30 1997-11-25 Woods Hole Oceanographic Institution Ocean acoustic tomography
US5497233A (en) 1994-07-27 1996-03-05 Litton Systems, Inc. Optical waveguide vibration sensor and method
DE4428650A1 (de) 1994-08-12 1996-02-15 Marinitsch Waldemar Optische Druckkrafterfassungsvorrichtung
GB2292495B (en) 1994-08-17 1998-03-25 Northern Telecom Ltd Fault location in optical communication systems
US5589937A (en) 1994-10-31 1996-12-31 The United States Of America As Represented By The Secretary Of The Navy Fiber optic self-multiplexing amplified ring transducer and force transfer sensor with pressure compensation
US5502782A (en) * 1995-01-09 1996-03-26 Optelecom, Inc. Focused acoustic wave fiber optic reflection modulator
US5636021A (en) 1995-06-02 1997-06-03 Udd; Eric Sagnac/Michelson distributed sensing systems
GB9515498D0 (en) 1995-07-28 1995-09-27 Bicc Plc Optical fibre system
US5625724A (en) 1996-03-06 1997-04-29 Litton Systems, Inc Fiber optic hydrophone having rigid mandrel
US5767950A (en) 1996-04-15 1998-06-16 Eastman Kodak Company Method and apparatus for calibrating iris of photographic printer
US5663927A (en) 1996-05-23 1997-09-02 The United States Of America As Represented By The Secretary Of The Navy Buoyed sensor array communications system
US5936719A (en) 1996-07-16 1999-08-10 Johnson; Robert W. Test unit and method for simultaneous testing of multiple optical fibers
FR2751746B1 (fr) 1996-07-24 1998-10-23 Boitel Michel Procede et dispositif de mesure par reflectometrie pour connexion de fibre optique
US5825516A (en) 1996-07-25 1998-10-20 Hewlett-Packard Company Optical power meter for detecting loss factors in fiber optic communications
US6072921A (en) 1997-07-18 2000-06-06 Litton Systems, Inc. Method of operating a fiber-optic acoustical sensor, apparatus for practicing the method, and in-line fiber-optic polarizer usable in such apparatus
US5778114A (en) 1997-04-18 1998-07-07 Eslambolchi; Hossein Fiber analysis method and apparatus
GB9721473D0 (en) 1997-10-09 1997-12-10 Sensor Dynamics Ltd Interferometric sensing apparatus
US6115520A (en) 1998-03-05 2000-09-05 Lucent Technologies Inc. Compact mach-zehnder interferometer and wavelength reference employing same
US6278657B1 (en) 1998-04-03 2001-08-21 The Board Of Trustees Of The Leland Stanford Junior University Folded sagnac sensor array
EP1496723B1 (de) 1998-04-03 2010-07-07 The Board Of Trustees Of The Leland Stanford Junior University Auf Sagnac-Interferometer basierende faseroptische akustische Sensormatrixanordnung
CA2270095C (en) 1998-04-28 2003-04-08 Fujikura Ltd. Apparatus for and method of using optical interference of light propagating through an optical fiber loop
US6285806B1 (en) 1998-05-31 2001-09-04 The United States Of America As Represented By The Secretary Of The Navy Coherent reflectometric fiber Bragg grating sensor array
US6315463B1 (en) 1998-08-21 2001-11-13 Infineon Technologies Ag Method for production of an optoelectronic female connector element, and an optoelectronic connector
US5975697A (en) 1998-11-25 1999-11-02 Oti Ophthalmic Technologies, Inc. Optical mapping apparatus with adjustable depth resolution
JP3759845B2 (ja) 1998-12-16 2006-03-29 富士通株式会社 光伝送路の監視のための方法及びシステム
US6459486B1 (en) 1999-03-10 2002-10-01 Eric Udd Single fiber Sagnac sensing system
US6148123A (en) 1999-03-17 2000-11-14 At&T Corp Method and apparatus for measuring optical distances
US6788417B1 (en) 1999-04-30 2004-09-07 The Regents Of The University Of California Optical fiber infrasound sensor
US6194706B1 (en) 1999-05-19 2001-02-27 Lucent Technologies Inc. Methods and systems for locating buried fiber optic cables
US6269198B1 (en) 1999-10-29 2001-07-31 Litton Systems, Inc. Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors
CA2320394A1 (en) 1999-10-29 2001-04-29 Litton Systems, Inc. Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors
US20010028766A1 (en) 1999-11-23 2001-10-11 Hamid Hatami-Hanza Interferometer based optical devices such as amplifiers
JP2001194109A (ja) 2000-01-14 2001-07-19 Nippon Koei Yokohama Works Co Ltd レイリー散乱を利用した変位計測装置
FR2818388B1 (fr) 2000-12-15 2003-02-14 Inst Francais Du Petrole Methode et dispositif d'exploration sismique d'une zone souterraine immergee, utilisant des recepteurs sismiques couples avec le fond de l'eau
US6594055B2 (en) 2001-01-17 2003-07-15 Oyster Optics, Inc. Secure fiber optic telecommunications system and method
GB0103665D0 (en) 2001-02-15 2001-03-28 Secr Defence Road traffic monitoring system
JP2002257682A (ja) 2001-03-02 2002-09-11 Ando Electric Co Ltd 波長分散分布測定器、及び測定方法
US6606148B2 (en) 2001-04-23 2003-08-12 Systems And Processes Engineering Corp. Method and system for measuring optical scattering characteristics
JP4184265B2 (ja) 2001-08-10 2008-11-19 ザ・ボード・オブ・トラスティーズ・オブ・ザ・レランド・スタンフォード・ジュニア・ユニバーシティ 2つの遅延コイルからの光信号を処理してサニャックベース光ファイバセンサアレイのダイナミックレンジを増大させる装置および方法
US6628570B2 (en) 2001-08-20 2003-09-30 The United States Of America As Represented By The Secretary Of The Navy Laser velocimetry detection of underwater sound
US6798523B2 (en) 2001-12-04 2004-09-28 Honeywell International Inc. Sensor and method for detecting fiber optic faults
FR2833359B1 (fr) 2001-12-10 2004-04-23 Inst Francais Du Petrole Systeme d'acquisition de donnees sismiques utilisant des stations d'acquisition posees sur le fond marin
US6813403B2 (en) 2002-03-14 2004-11-02 Fiber Optic Systems Technology, Inc. Monitoring of large structures using brillouin spectrum analysis
US6775203B2 (en) 2002-07-18 2004-08-10 Input/Output, Inc. Seismic seabed cable with sensor units
DE60221681T2 (de) 2002-12-16 2008-04-30 Aston Photonic Technologies Ltd. Optisches Wellenleiter-Gitter Abfragesystem und Sensorsystem
US6933845B2 (en) 2003-04-08 2005-08-23 Lockheed Martin Corporation Photon intrusion detector
GB2401738A (en) 2003-05-16 2004-11-17 Radiodetection Ltd Optical fibre sensor
US7066023B2 (en) 2003-07-14 2006-06-27 Environmental Security Corporation Distributed sensor array for fluid contaminant monitoring
US6859419B1 (en) 2003-08-18 2005-02-22 The United States Of America As Represented By The Secretary Of The Navy Laser-based acousto-optic uplink communications technique
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
JP4809770B2 (ja) 2004-08-30 2011-11-09 三菱電機株式会社 海底観測システム
US7848645B2 (en) 2004-09-30 2010-12-07 British Telecommunications Public Limited Company Identifying or locating waveguides
GB0421747D0 (en) 2004-09-30 2004-11-03 British Telecomm Distributed backscattering
CA2589792A1 (en) 2004-12-17 2006-06-22 British Telecommunications Public Limited Company Assessing a network
GB0427733D0 (en) 2004-12-17 2005-01-19 British Telecomm Optical system
GB0504579D0 (en) 2005-03-04 2005-04-13 British Telecomm Communications system
EP1708388A1 (de) 2005-03-31 2006-10-04 British Telecommunications Public Limited Company Verfahren zum Mitteilen von Informationen
EP1713301A1 (de) 2005-04-14 2006-10-18 BRITISH TELECOMMUNICATIONS public limited company Verfahren und Gerät zur Schallübertragung über eine optische Verbindung
EP1729096A1 (de) 2005-06-02 2006-12-06 BRITISH TELECOMMUNICATIONS public limited company Verfahren und Vorrichtung zur Ermittlung der Stelle einer Störung in einer optischen Faser
EP1826924A1 (de) 2006-02-24 2007-08-29 BRITISH TELECOMMUNICATIONS public limited company Abtastung einer Störung
EP1987317B1 (de) 2006-02-24 2013-07-17 BRITISH TELECOMMUNICATIONS public limited company Erfassen einer störung

Also Published As

Publication number Publication date
WO2006092606A1 (en) 2006-09-08
ATE434774T1 (de) 2009-07-15
EP1853964A1 (de) 2007-11-14
US7697795B2 (en) 2010-04-13
EP1853964B1 (de) 2009-06-24
US20080166120A1 (en) 2008-07-10

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