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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Publication number
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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JP2004525388A (ja
JP2004525388A5 (enExample
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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)
  • Dental Preparations (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Multicomponent Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Length Measuring Devices By Optical Means (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 (enExample) 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 (enExample)
EP (1) EP1390707B1 (enExample)
JP (1) JP4350380B2 (enExample)
AT (1) ATE348323T1 (enExample)
CA (1) CA2447660A1 (enExample)
DE (1) DE60216752T8 (enExample)
GB (1) GB0112161D0 (enExample)
WO (1) WO2002095349A1 (enExample)

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JP4388018B2 (ja) * 2003-10-22 2009-12-24 株式会社フジクラ 光ファイバおよび光ファイバの偏波モード分散測定方法
US7697729B2 (en) 2004-01-29 2010-04-13 Authentec, Inc. System for and method of finger initiated actions
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
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
WO2008122123A1 (en) * 2007-04-05 2008-10-16 Exfo Electro-Optical Engineering Inc. Method and system for determining in-band optical noise
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
CN102301129A (zh) * 2009-01-30 2011-12-28 歌美飒创新技术公司 静态试验中的风轮机叶片应变测量系统
GB0912851D0 (en) * 2009-07-23 2009-08-26 Fotech Solutions Ltd Distributed optical fibre sensing
US8866347B2 (en) 2010-01-15 2014-10-21 Idex Asa Biometric image sensing
US8421890B2 (en) 2010-01-15 2013-04-16 Picofield Technologies, Inc. Electronic imager using an impedance sensor grid array and method of making
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
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WO2015144199A1 (en) * 2014-03-24 2015-10-01 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
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
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EA202090867A1 (ru) 2017-10-11 2020-09-04 Бп Эксплорейшн Оперейтинг Компани Лимитед Обнаружение событий с использованием признаков в области акустических частот
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EP4045766A1 (en) 2019-10-17 2022-08-24 Lytt Limited Fluid inflow characterization using hybrid das/dts measurements
WO2021073740A1 (en) 2019-10-17 2021-04-22 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
EP4491845A3 (en) 2020-06-11 2025-03-12 Lytt Limited Systems and methods for monitoring fluid outflow flow along a wellbore
EP4168647A1 (en) 2020-06-18 2023-04-26 Lytt Limited 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

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Also Published As

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

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