GB0112161D0 - Distributed fibre polarimetry for communications and sensing - Google Patents

Distributed fibre polarimetry for communications and sensing

Info

Publication number
GB0112161D0
GB0112161D0 GBGB0112161.5A GB0112161A GB0112161D0 GB 0112161 D0 GB0112161 D0 GB 0112161D0 GB 0112161 A GB0112161 A GB 0112161A GB 0112161 D0 GB0112161 D0 GB 0112161D0
Authority
GB
United Kingdom
Prior art keywords
optical fiber
polarisation
polarimetry
communications
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.)
Ceased
Application number
GBGB0112161.5A
Other languages
English (en)
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.)
ROGERS ALAN J
Original Assignee
ROGERS ALAN J
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 ROGERS ALAN J filed Critical ROGERS ALAN J
Priority to GBGB0112161.5A priority Critical patent/GB0112161D0/en
Publication of GB0112161D0 publication Critical patent/GB0112161D0/en
Priority to AT02771667T priority patent/ATE348323T1/de
Priority to PCT/GB2002/002138 priority patent/WO2002095349A1/en
Priority to DE60216752T priority patent/DE60216752T8/de
Priority to EP02771667A priority patent/EP1390707B1/en
Priority to CA002447660A priority patent/CA2447660A1/en
Priority to JP2002591777A priority patent/JP4350380B2/ja
Priority to US10/476,654 priority patent/US7130496B2/en
Ceased 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
    • G01M11/3181—Reflectometers dealing with polarisation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Artificial Filaments (AREA)
  • Dental Preparations (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Multicomponent Fibers (AREA)
  • Length Measuring Devices By Optical Means (AREA)
GBGB0112161.5A 2001-05-18 2001-05-18 Distributed fibre polarimetry for communications and sensing Ceased GB0112161D0 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GBGB0112161.5A GB0112161D0 (en) 2001-05-18 2001-05-18 Distributed fibre polarimetry for communications and sensing
AT02771667T ATE348323T1 (de) 2001-05-18 2002-05-09 Faseroptische rückstreu-polarimetrie
PCT/GB2002/002138 WO2002095349A1 (en) 2001-05-18 2002-05-09 Optical fibre backscatter polarimetry
DE60216752T DE60216752T8 (de) 2001-05-18 2002-05-09 Faseroptische rückstreu-polarimetrie
EP02771667A EP1390707B1 (en) 2001-05-18 2002-05-09 Optical fibre backscatter polarimetry
CA002447660A CA2447660A1 (en) 2001-05-18 2002-05-09 Optical fibre backscatter polarimetry
JP2002591777A JP4350380B2 (ja) 2001-05-18 2002-05-09 光ファイバの後方散乱偏光分析
US10/476,654 US7130496B2 (en) 2001-05-18 2002-05-09 Optical fibre backscatter polarimetry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0112161.5A GB0112161D0 (en) 2001-05-18 2001-05-18 Distributed fibre polarimetry for communications and sensing

Publications (1)

Publication Number Publication Date
GB0112161D0 true GB0112161D0 (en) 2001-07-11

Family

ID=9914873

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB0112161.5A Ceased GB0112161D0 (en) 2001-05-18 2001-05-18 Distributed fibre polarimetry for communications and sensing

Country Status (8)

Country Link
US (1) US7130496B2 (cg-RX-API-DMAC7.html)
EP (1) EP1390707B1 (cg-RX-API-DMAC7.html)
JP (1) JP4350380B2 (cg-RX-API-DMAC7.html)
AT (1) ATE348323T1 (cg-RX-API-DMAC7.html)
CA (1) CA2447660A1 (cg-RX-API-DMAC7.html)
DE (1) DE60216752T8 (cg-RX-API-DMAC7.html)
GB (1) GB0112161D0 (cg-RX-API-DMAC7.html)
WO (1) WO2002095349A1 (cg-RX-API-DMAC7.html)

Cited By (1)

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CN106289726A (zh) * 2016-07-14 2017-01-04 北京航空航天大学 一种光子带隙光纤背向散射分布式测量方法及装置

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US7474772B2 (en) 2003-06-25 2009-01-06 Atrua Technologies, Inc. System and method for a miniature user input device
US7173690B2 (en) 2003-07-03 2007-02-06 Senstar-Stellar Corporation Method and apparatus using polarisation optical time domain reflectometry for security applications
US7587072B2 (en) 2003-08-22 2009-09-08 Authentec, Inc. System for and method of generating rotational inputs
RU2339982C2 (ru) * 2003-10-22 2008-11-27 Фудзикура Лтд. Оптическое волокно и способ измерения поляризационной модовой дисперсии оптического волокна
US7697729B2 (en) 2004-01-29 2010-04-13 Authentec, Inc. System for and method of finger initiated actions
US7142737B1 (en) 2005-01-12 2006-11-28 Network Integrity Systems Inc. Intrusion detection system for use on single mode optical fiber using a storage register for data
US8094977B2 (en) 2005-01-12 2012-01-10 Network Integrity Systems Inc. Intrusion detection system for use on single mode optical fiber using a simplified polarimeter
US7831070B1 (en) 2005-02-18 2010-11-09 Authentec, Inc. Dynamic finger detection mechanism for a fingerprint sensor
US8231056B2 (en) 2005-04-08 2012-07-31 Authentec, Inc. System for and method of protecting an integrated circuit from over currents
JP4781746B2 (ja) * 2005-04-14 2011-09-28 株式会社フジクラ 光ファイバの複屈折測定方法及び測定装置及び光ファイバの偏波モード分散測定方法
KR100832470B1 (ko) 2005-04-14 2008-05-26 가부시키가이샤후지쿠라 광섬유의 복굴절 측정 방법 및 측정 장치, 광섬유의 편파모드 분산 측정 방법 및 광섬유
US7164469B1 (en) 2005-06-30 2007-01-16 Corning Incorporated Method of evaluating fiber PMD using composite POTDR trace
JP4554476B2 (ja) * 2005-08-30 2010-09-29 財団法人電力中央研究所 生体活動監視方法と、これに用いる光ファイバ式平板状体センサ
US7190442B1 (en) * 2005-08-31 2007-03-13 Corning Incorporated Method of evaluating fiber PMD using POTDR trace
US8364034B2 (en) * 2007-04-05 2013-01-29 Exfo Inc. In-band optical noise measurement using differential polarization response
CN101682424B (zh) * 2007-04-05 2014-02-19 爱斯福公司 用于确定带内光噪声的方法和系统
JP4770913B2 (ja) * 2008-11-13 2011-09-14 横河電機株式会社 光ファイバ特性測定装置および光ファイバ特性測定方法
GB0823306D0 (en) 2008-12-22 2009-01-28 Rogers Alan Frequency-mapped distributed presure measurement
WO2010086466A1 (es) * 2009-01-30 2010-08-05 Gamesa Innovation & Technology, S.L. Sistema de medición de deformaciones en palas de aerogeneradores durante ensayos estáticos
GB0912851D0 (en) * 2009-07-23 2009-08-26 Fotech Solutions Ltd Distributed optical fibre sensing
US8421890B2 (en) 2010-01-15 2013-04-16 Picofield Technologies, Inc. Electronic imager using an impedance sensor grid array and method of making
US8866347B2 (en) 2010-01-15 2014-10-21 Idex Asa Biometric image sensing
US9158958B2 (en) 2010-10-28 2015-10-13 Synaptics Incorporated Signal strength enhancement in a biometric sensor array
GB201019117D0 (en) 2010-11-11 2010-12-29 Fotech Solutions Ltd Distributed optical fibre sensor
EP2836960B1 (en) 2012-04-10 2018-09-26 Idex Asa Biometric sensing
US10139433B2 (en) 2014-03-24 2018-11-27 Prysmian S.P.A. Method of measuring current distribution in high and medium voltage cables
BR112018070565A2 (pt) 2016-04-07 2019-02-12 Bp Exploration Operating Company Limited detecção de eventos de fundo de poço usando características de domínio da frequência acústicas
AU2017246520B2 (en) 2016-04-07 2022-04-07 Bp Exploration Operating Company Limited Detecting downhole events using acoustic frequency domain features
EP3608503B1 (en) 2017-03-31 2022-05-04 BP Exploration Operating Company Limited Well and overburden monitoring using distributed acoustic sensors
BR112020003742A2 (pt) 2017-08-23 2020-09-01 Bp Exploration Operating Company Limited detecção de localizações de ingresso de areia em fundo de poço
CA3078842C (en) 2017-10-11 2024-01-09 Bp Exploration Operating Company Limited Detecting events using acoustic frequency domain features
US20200174149A1 (en) 2018-11-29 2020-06-04 Bp Exploration Operating Company Limited Event Detection Using DAS Features with Machine Learning
GB201820331D0 (en) 2018-12-13 2019-01-30 Bp Exploration Operating Co Ltd Distributed acoustic sensing autocalibration
WO2021052602A1 (en) 2019-09-20 2021-03-25 Lytt Limited Systems and methods for sand ingress prediction for subterranean wellbores
CA3154435C (en) 2019-10-17 2023-03-28 Lytt Limited Inflow detection using dts features
EP4045766A1 (en) 2019-10-17 2022-08-24 Lytt Limited Fluid inflow characterization using hybrid das/dts measurements
WO2021093974A1 (en) 2019-11-15 2021-05-20 Lytt Limited Systems and methods for draw down improvements across wellbores
WO2021249643A1 (en) 2020-06-11 2021-12-16 Lytt Limited Systems and methods for subterranean fluid flow characterization
WO2021254633A1 (en) 2020-06-18 2021-12-23 Lytt Limited Event model training using in situ data
CA3182376A1 (en) 2020-06-18 2021-12-23 Cagri CERRAHOGLU Event model training using in situ data
IT202200004667A1 (it) 2022-03-11 2022-06-11 Sestosensor S R L Rivelatore di fase e polarizzazione per sensori acustici distribuiti a fibre ottiche ed interrogatore basato sullo stesso

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GB8622609D0 (en) * 1986-09-19 1986-10-22 Rogers A J Optical fibres
US4840481A (en) * 1987-12-10 1989-06-20 Simmonds Precision Polarimetric optical frequency domain distributed strain sensor and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106289726A (zh) * 2016-07-14 2017-01-04 北京航空航天大学 一种光子带隙光纤背向散射分布式测量方法及装置
CN106289726B (zh) * 2016-07-14 2018-08-24 北京航空航天大学 一种光子带隙光纤背向散射分布式测量方法及装置

Also Published As

Publication number Publication date
EP1390707A1 (en) 2004-02-25
DE60216752D1 (de) 2007-01-25
DE60216752T2 (de) 2007-10-11
ATE348323T1 (de) 2007-01-15
CA2447660A1 (en) 2002-11-28
DE60216752T8 (de) 2008-02-07
JP4350380B2 (ja) 2009-10-21
US7130496B2 (en) 2006-10-31
WO2002095349A1 (en) 2002-11-28
EP1390707B1 (en) 2006-12-13
JP2004525388A (ja) 2004-08-19
US20040136636A1 (en) 2004-07-15

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application
AT Applications terminated before publication under section 16(1)