CA2058957A1 - Optical time domain reflectometry - Google Patents

Optical time domain reflectometry

Info

Publication number
CA2058957A1
CA2058957A1 CA2058957A CA2058957A CA2058957A1 CA 2058957 A1 CA2058957 A1 CA 2058957A1 CA 2058957 A CA2058957 A CA 2058957A CA 2058957 A CA2058957 A CA 2058957A CA 2058957 A1 CA2058957 A1 CA 2058957A1
Authority
CA
Canada
Prior art keywords
time domain
optical time
domain reflectometry
optical
domain reflectometer
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.)
Granted
Application number
CA2058957A
Other languages
French (fr)
Other versions
CA2058957C (en
Inventor
Lutz Christian Blank
David Michael Spirit
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.)
IPG Photonics Corp
Original Assignee
Lutz Christian Blank
David Michael Spirit
British Telecommunications Public Limited Company
Ipg Photonics Corporation
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
Priority claimed from GB898914364A external-priority patent/GB8914364D0/en
Priority claimed from GB898915165A external-priority patent/GB8915165D0/en
Application filed by Lutz Christian Blank, David Michael Spirit, British Telecommunications Public Limited Company, Ipg Photonics Corporation filed Critical Lutz Christian Blank
Publication of CA2058957A1 publication Critical patent/CA2058957A1/en
Application granted granted Critical
Publication of CA2058957C publication Critical patent/CA2058957C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01M11/319—Reflectometers using stimulated back-scatter, e.g. Raman or fibre amplifiers

Abstract

Apparatus and a method for increasing the optical measurement range in optical time domain reflectometers in which a fibre laser amplifier is used to amplify the optical time domain reflectometer pulses launched into a waveguide. This apparatus and method have particular usefulness for branched local networks. The signal returning to the optical time domain reflectometer is amplified as well as the outbound signal.
CA002058957A 1989-06-22 1990-06-22 Optical time domain reflectometry Expired - Lifetime CA2058957C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB8914364.8 1989-06-22
GB898914364A GB8914364D0 (en) 1989-06-22 1989-06-22 Optical time domain reflectometry
GB8915165.8 1989-07-01
GB898915165A GB8915165D0 (en) 1989-07-01 1989-07-01 Optical time domain reflectometry
PCT/GB1990/000962 WO1990015980A1 (en) 1989-06-22 1990-06-22 Optical time domain reflectometry

Publications (2)

Publication Number Publication Date
CA2058957A1 true CA2058957A1 (en) 1990-12-23
CA2058957C CA2058957C (en) 1999-05-04

Family

ID=26295522

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002058957A Expired - Lifetime CA2058957C (en) 1989-06-22 1990-06-22 Optical time domain reflectometry

Country Status (13)

Country Link
US (2) US5298965A (en)
EP (1) EP0478654B1 (en)
JP (1) JP2957696B2 (en)
AT (1) ATE97237T1 (en)
AU (2) AU5839290A (en)
CA (1) CA2058957C (en)
DE (1) DE69004571T2 (en)
DK (1) DK0478654T3 (en)
ES (1) ES2045933T3 (en)
FI (1) FI101746B (en)
GB (1) GB2250654B (en)
HK (1) HK135696A (en)
WO (2) WO1990015980A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2075961C (en) * 1990-02-15 1999-01-05 Peter John Keeble Optical test apparatus
GB2252154A (en) * 1991-01-26 1992-07-29 Stc Plc Testing erbium doped optical fibres.
GB9115453D0 (en) * 1991-07-18 1991-09-04 British Telecomm Fault location in optical systems
USH1436H (en) * 1992-10-13 1995-05-02 Kersey Alan D Interferometric fiber optic sensor configuration with pump-induced phase carrier
DK172234B1 (en) * 1995-05-10 1998-01-26 Dsc Communications As Methods for determining the noise level during measurement on an optical fiber
GB9715289D0 (en) * 1997-07-22 1997-09-24 King S College London Wavelength measuring system
US6552290B1 (en) * 1999-02-08 2003-04-22 Spectra Systems Corporation Optically-based methods and apparatus for performing sorting coding and authentication using a gain medium that provides a narrowband emission
ATE313878T1 (en) 2000-07-10 2006-01-15 Mpb Technologies Inc CASCADED PUMPING SYSTEM FOR DISTRIBUTED RAMAN AMPLIFICATION IN FIBER OPTICAL TRANSMISSION SYSTEMS
JP3904835B2 (en) * 2001-01-29 2007-04-11 株式会社日立製作所 Optical amplifier, optical fiber Raman optical amplifier, and optical system
US6433922B1 (en) 2001-02-26 2002-08-13 Redc Optical Networks Ltd. Apparatus and method for a self adjusting Raman amplifier
US6850360B1 (en) * 2001-04-16 2005-02-01 Bookham, Inc. Raman amplifier systems with diagnostic capabilities
US6526189B1 (en) 2001-06-13 2003-02-25 The United States Of America As Represented By The Secretary Of The Army Scour sensor assembly
US20040208503A1 (en) * 2001-12-06 2004-10-21 William Shieh Systems and methods for detecting faults in optical communication systems
KR100488195B1 (en) * 2002-01-31 2005-05-10 주식회사 럭스퍼트 Fiber Raman amplifier
JP3961973B2 (en) * 2003-03-14 2007-08-22 富士通株式会社 OTDR measurement method and terminal device
GB201207881D0 (en) * 2012-05-04 2012-06-20 Isis Innovation Active chemical sensing using optical microcavity
US9140624B2 (en) 2012-07-03 2015-09-22 Ciena Corporation Systems and methods reducing coherence effect in narrow line-width light sources
US9752955B2 (en) 2014-07-31 2017-09-05 Ii-Vi Incorporated Edge propagating optical time domain reflectometer and method of using the same
US9503181B2 (en) 2015-01-06 2016-11-22 Ii-Vi Incorporated Rare earth-doped fiber amplifier with integral optical metrology functionality
US10763962B2 (en) 2016-02-18 2020-09-01 Apriori Network Systems, Llc. Secured fiber link system
US10284288B2 (en) 2016-02-18 2019-05-07 Apriori Network Systems, Llc Secured fiber link system
US10784969B2 (en) * 2016-02-18 2020-09-22 Apriori Network Systems, Llc. Secured fiber link system
EP3324169A1 (en) * 2016-11-22 2018-05-23 Xieon Networks S.à r.l. Detection of gainers and exaggerated losses in unidirectional otdr traces
US11671172B1 (en) * 2022-02-25 2023-06-06 Huawei Technologies Co., Ltd. Systems and methods for characterizing an optical fiber in a dense wavelength division multiplexing optical link

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3577236D1 (en) * 1984-12-13 1990-05-23 Stc Plc OPTICAL AMPLIFIER.
GB8512980D0 (en) * 1985-05-22 1985-06-26 Pa Consulting Services Fibre optic transmissions systems
GB2182222B (en) * 1985-10-18 1990-01-24 Stc Plc Optical fibre testing
JPH01142435A (en) * 1987-11-28 1989-06-05 Nippon Telegr & Teleph Corp <Ntt> Apparatus for measuring back scattering light
US5013907A (en) * 1990-03-27 1991-05-07 Tektronix, Inc. Optical time domain testing instrument

Also Published As

Publication number Publication date
DE69004571T2 (en) 1994-03-10
GB2250654B (en) 1994-04-20
EP0478654B1 (en) 1993-11-10
AU5839290A (en) 1991-01-08
US5448059A (en) 1995-09-05
AU5924190A (en) 1991-01-08
ES2045933T3 (en) 1994-01-16
US5298965A (en) 1994-03-29
GB9126780D0 (en) 1992-03-11
HK135696A (en) 1996-08-02
JPH04506405A (en) 1992-11-05
JP2957696B2 (en) 1999-10-06
FI916037A0 (en) 1991-12-20
GB2250654A (en) 1992-06-10
WO1990015980A1 (en) 1990-12-27
EP0478654A1 (en) 1992-04-08
WO1990015979A1 (en) 1990-12-27
FI101746B1 (en) 1998-08-14
AU632597B2 (en) 1993-01-07
DK0478654T3 (en) 1994-03-14
ATE97237T1 (en) 1993-11-15
DE69004571D1 (en) 1993-12-16
CA2058957C (en) 1999-05-04
FI101746B (en) 1998-08-14

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