WO2005074660A3 - Method and apparatus for in-service monitoring of a regional undersea optical transmission system using cotdr - Google Patents

Method and apparatus for in-service monitoring of a regional undersea optical transmission system using cotdr Download PDF

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Publication number
WO2005074660A3
WO2005074660A3 PCT/US2005/000448 US2005000448W WO2005074660A3 WO 2005074660 A3 WO2005074660 A3 WO 2005074660A3 US 2005000448 W US2005000448 W US 2005000448W WO 2005074660 A3 WO2005074660 A3 WO 2005074660A3
Authority
WO
WIPO (PCT)
Prior art keywords
cotdr
probe signal
optical transmission
optical
status information
Prior art date
Application number
PCT/US2005/000448
Other languages
French (fr)
Other versions
WO2005074660A2 (en
Inventor
William David Cornwell
Jr Stephen G Evangelides
Jonathan A Nagel
Nigel Hunt Taylor
Stephen Arthur Hughes Smith
Original Assignee
Red Sky Systems Inc
Edwards Henry Owen
Ahern Glenn John
William David Cornwell
Jr Stephen G Evangelides
Jonathan A Nagel
Nigel Hunt Taylor
Stephen Arthur Hughes Smith
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 Red Sky Systems Inc, Edwards Henry Owen, Ahern Glenn John, William David Cornwell, Jr Stephen G Evangelides, Jonathan A Nagel, Nigel Hunt Taylor, Stephen Arthur Hughes Smith filed Critical Red Sky Systems Inc
Priority to CA002552578A priority Critical patent/CA2552578A1/en
Priority to JP2006549419A priority patent/JP2007518365A/en
Priority to EP05705213A priority patent/EP1709757A2/en
Publication of WO2005074660A2 publication Critical patent/WO2005074660A2/en
Publication of WO2005074660A3 publication Critical patent/WO2005074660A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]

Abstract

A method and apparatus is provided for obtaining status information concerning an optical transmission path. The method begins by generating a COTDR probe signal having a prescribed wavelength and transmitting optical traffic signals and the COTDR probe signal over an optical transmission path (306) having a length corresponding to those used in regional undersea market applications. The prescribed wavelength of the COTDR probe signal is separated from wavelengths at which the optical traffic signals are located by a distance at least equal to a predetermined guard band. A backscattered and/or reflected portion of the COTDR probe signal in which status information concerning the optical path is embodied is received over the optical path. The backscattered and/or reflected portion of the COTDR probe signal is detected to obtain the status information.
PCT/US2005/000448 2004-01-07 2005-01-07 Method and apparatus for in-service monitoring of a regional undersea optical transmission system using cotdr WO2005074660A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002552578A CA2552578A1 (en) 2004-01-07 2005-01-07 Method and apparatus for in-service monitoring of a regional undersea optical transmission system using cotdr
JP2006549419A JP2007518365A (en) 2004-01-07 2005-01-07 Method and apparatus for monitoring a local optical submarine optical transmission device in operation using COTDR
EP05705213A EP1709757A2 (en) 2004-01-07 2005-01-07 Method and apparatus for in-service monitoring of a regional undersea optical transmission system using cotdr

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53513504P 2004-01-07 2004-01-07
US60/535,135 2004-01-07

Publications (2)

Publication Number Publication Date
WO2005074660A2 WO2005074660A2 (en) 2005-08-18
WO2005074660A3 true WO2005074660A3 (en) 2006-08-03

Family

ID=34837345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/000448 WO2005074660A2 (en) 2004-01-07 2005-01-07 Method and apparatus for in-service monitoring of a regional undersea optical transmission system using cotdr

Country Status (4)

Country Link
EP (1) EP1709757A2 (en)
JP (1) JP2007518365A (en)
CA (1) CA2552578A1 (en)
WO (1) WO2005074660A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0803774D0 (en) * 2008-02-29 2008-04-09 Roke Manor Research Modulation scheme
CN113330694A (en) 2018-11-16 2021-08-31 日本电气株式会社 Optical transmission line monitoring device, optical transmission line monitoring system, and optical transmission line monitoring method
US20210021336A1 (en) * 2019-03-06 2021-01-21 Huawei Marine Networks Co., Ltd. Submarine network device and submarine cable system
EP3951311A4 (en) 2019-04-05 2022-08-24 NEC Corporation Measurement system and measurement method
CN112019264A (en) * 2019-05-31 2020-12-01 烽火通信科技股份有限公司 Submarine optical cable line fault detection system and method
CN110492927B (en) * 2019-09-27 2024-02-20 中国电子科技集团公司第三十四研究所 Submarine optical cable disturbance monitoring system with relay based on shore-based detection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6064514A (en) * 1995-10-30 2000-05-16 Nec Corporation Optical surge preventing method and system for use with or in a rare earth doped fiber circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6064514A (en) * 1995-10-30 2000-05-16 Nec Corporation Optical surge preventing method and system for use with or in a rare earth doped fiber circuit

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Optical Networks: A Practical Perspective", 2002, ACADEMIC PRESS, SAN FRANCISCO, article RAMASWAMI R, SIVARAJAN K. N., pages: 89 - 91, XP008070517 *
FURUKAWA S. ET AL.: "Enhanced coherent OTDR for long span optical transmission lines containing optical fiber amplifiers", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 7, no. 5, May 1995 (1995-05-01), pages 540 - 542, XP000506802 *
HORIUCHI Y.: "In-service inter-span fault monitoring on multi-repeatered WDM transmission system", 11TH INTERNATIONAL CONFERENCE ON INTEGRATED OPTICS AND OPTICAL FIBRE COMMUNICATIONS, AND 23RD EUROPEAN CONFERENCE ON OPTICAL COMMUNICATIONS, no. PUBL. NO. 448, 22 September 1997 (1997-09-22) - 25 September 1997 (1997-09-25), XP006508517 *

Also Published As

Publication number Publication date
EP1709757A2 (en) 2006-10-11
CA2552578A1 (en) 2005-08-18
WO2005074660A2 (en) 2005-08-18
JP2007518365A (en) 2007-07-05

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