JP4350380B2 - 光ファイバの後方散乱偏光分析 - Google Patents

光ファイバの後方散乱偏光分析 Download PDF

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JP4350380B2
JP4350380B2 JP2002591777A JP2002591777A JP4350380B2 JP 4350380 B2 JP4350380 B2 JP 4350380B2 JP 2002591777 A JP2002591777 A JP 2002591777A JP 2002591777 A JP2002591777 A JP 2002591777A JP 4350380 B2 JP4350380 B2 JP 4350380B2
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optical waveguide
light
polarization
optical fiber
retardance
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JP2004525388A5 (https=
JP2004525388A (ja
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ロジャーズ，アラン・ジョン
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Fotech Solutions Ltd
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Fotech Solutions Ltd
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    • 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

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  • 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)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Dental Preparations (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Multicomponent Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
JP2002591777A 2001-05-18 2002-05-09 光ファイバの後方散乱偏光分析 Expired - Lifetime JP4350380B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0112161.5A GB0112161D0 (en) 2001-05-18 2001-05-18 Distributed fibre polarimetry for communications and sensing
PCT/GB2002/002138 WO2002095349A1 (en) 2001-05-18 2002-05-09 Optical fibre backscatter polarimetry

Publications (3)

Publication Number Publication Date
JP2004525388A JP2004525388A (ja) 2004-08-19
JP2004525388A5 JP2004525388A5 (https=) 2005-08-18
JP4350380B2 true JP4350380B2 (ja) 2009-10-21

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JP2002591777A Expired - Lifetime JP4350380B2 (ja) 2001-05-18 2002-05-09 光ファイバの後方散乱偏光分析

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US (1) US7130496B2 (https=)
EP (1) EP1390707B1 (https=)
JP (1) JP4350380B2 (https=)
AT (1) ATE348323T1 (https=)
CA (1) CA2447660A1 (https=)
DE (1) DE60216752T8 (https=)
GB (1) GB0112161D0 (https=)
WO (1) WO2002095349A1 (https=)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP1698919A4 (en) * 2003-10-22 2007-08-15 Fujikura Ltd OPTICAL FIBER AND METHOD OF MEASURING THE DIFFUSION OF THE POLARIZATION MODE OF THE OPTICAL FIBER
US7697729B2 (en) 2004-01-29 2010-04-13 Authentec, Inc. System for and method of finger initiated actions
US7206469B2 (en) 2005-01-12 2007-04-17 Network Integrity Systems Inc. Intrusion detection system for use on single mode optical fiber using a polarimeter
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
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
KR100832470B1 (ko) 2005-04-14 2008-05-26 가부시키가이샤후지쿠라 광섬유의 복굴절 측정 방법 및 측정 장치, 광섬유의 편파모드 분산 측정 방법 및 광섬유
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
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
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
US8364034B2 (en) * 2007-04-05 2013-01-29 Exfo Inc. In-band optical noise measurement using differential polarization response
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
EP2392818A1 (en) * 2009-01-30 2011-12-07 Gamesa Innovation & Technology, S.L. System for measuring deformations of wind turbine blades during static tests
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
US20130279769A1 (en) 2012-04-10 2013-10-24 Picofield Technologies Inc. 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
BR112018070577A2 (pt) 2016-04-07 2019-02-12 Bp Exploration Operating Company Limited detecção de localizações de ingresso de areia de fundo de poço
EP3670830B1 (en) 2016-04-07 2021-08-11 BP Exploration Operating Company Limited Detecting downhole events using acoustic frequency domain features
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
WO2018178279A1 (en) 2017-03-31 2018-10-04 Bp Exploration Operating Company Limited Well and overburden monitoring using distributed acoustic sensors
EP3673148B1 (en) 2017-08-23 2021-10-06 BP Exploration Operating Company Limited Detecting downhole sand ingress locations
WO2019072899A2 (en) 2017-10-11 2019-04-18 Bp Exploration Operating Company Limited EVENT DETECTION USING FREQUENCY DOMAIN ACOUSTIC CHARACTERISTICS
EP4234881A3 (en) 2018-11-29 2023-10-18 BP Exploration Operating Company Limited Das data processing to identify fluid inflow locations and fluid type
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
EP4045766A1 (en) 2019-10-17 2022-08-24 Lytt Limited Fluid inflow characterization using hybrid das/dts measurements
CA3154435C (en) 2019-10-17 2023-03-28 Lytt Limited Inflow detection using dts features
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
CA3182376A1 (en) 2020-06-18 2021-12-23 Cagri CERRAHOGLU Event model training using in situ data
WO2021254633A1 (en) 2020-06-18 2021-12-23 Lytt Limited 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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
GB0112161D0 (en) 2001-07-11
EP1390707B1 (en) 2006-12-13
WO2002095349A1 (en) 2002-11-28
DE60216752T2 (de) 2007-10-11
DE60216752T8 (de) 2008-02-07
EP1390707A1 (en) 2004-02-25
DE60216752D1 (de) 2007-01-25
CA2447660A1 (en) 2002-11-28
JP2004525388A (ja) 2004-08-19
US7130496B2 (en) 2006-10-31
ATE348323T1 (de) 2007-01-15
US20040136636A1 (en) 2004-07-15

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