CA2541838A1 - Method and apparatus for testing optical networks - Google Patents

Method and apparatus for testing optical networks Download PDF

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Publication number
CA2541838A1
CA2541838A1 CA002541838A CA2541838A CA2541838A1 CA 2541838 A1 CA2541838 A1 CA 2541838A1 CA 002541838 A CA002541838 A CA 002541838A CA 2541838 A CA2541838 A CA 2541838A CA 2541838 A1 CA2541838 A1 CA 2541838A1
Authority
CA
Canada
Prior art keywords
optical
port
optical signal
instrument
transmission path
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
CA002541838A
Other languages
French (fr)
Other versions
CA2541838C (en
Inventor
Bernard Ruchet
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.)
Exfo Inc
Original Assignee
Bernard Ruchet
Exfo Electro-Optical Engineering Inc.
Exfo Inc.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34435140&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2541838(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bernard Ruchet, Exfo Electro-Optical Engineering Inc., Exfo Inc. filed Critical Bernard Ruchet
Publication of CA2541838A1 publication Critical patent/CA2541838A1/en
Application granted granted Critical
Publication of CA2541838C publication Critical patent/CA2541838C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • 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
    • 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
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • 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
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0793—Network aspects, e.g. central monitoring of transmission parameters
    • 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
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • 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
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07953—Monitoring or measuring OSNR, BER or Q
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0079—Operation or maintenance aspects
    • H04Q2011/0083—Testing; Monitoring

Abstract

An instrument for measuring bidirectional optical signals propagating in an optical transmission path between elements one of which will not transmit if continuity of the transmission path is not maintained, for example a branch path between a central offices optical line terminal (OLT) and an end-user's optical network terminal (ONT), comprises first and second connector receptacles for connecting the instrument into the path, a 2 x 2 coupler (32) having first and second ports (28, 30) connected to the first and second connectors (22, 24), respectively, for completing the optical transmission path, a third port (36) for, outputting a portion of each optical signal received via the first port (28) and a fourth port (34) for outputting a portion of each optical signal received via the second port (30) Detectors (38, 42, 44) coupled to the third and fourth ports convert the optical signal portions into corresponding electrical signals, which are processed to provide the desired measurements. The measurement results may be displayed by a suitable display unit (60) Where the ÖLT transmits signals at two different wavelengths, the instrument may separate parts of the corresponding optical signal portion according to wavelength and process them separately.
CA002541838A 2003-10-15 2004-08-23 Method and apparatus for testing optical networks Expired - Fee Related CA2541838C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US51110503P 2003-10-15 2003-10-15
US60/511,105 2003-10-15
PCT/CA2004/001552 WO2005036783A1 (en) 2003-10-15 2004-08-23 Method and apparatus for testing optical networks

Publications (2)

Publication Number Publication Date
CA2541838A1 true CA2541838A1 (en) 2005-04-21
CA2541838C CA2541838C (en) 2009-06-30

Family

ID=34435140

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002541838A Expired - Fee Related CA2541838C (en) 2003-10-15 2004-08-23 Method and apparatus for testing optical networks

Country Status (11)

Country Link
US (5) US7187861B2 (en)
EP (1) EP1673881B1 (en)
CN (2) CN1833384B (en)
AT (1) ATE433623T1 (en)
CA (1) CA2541838C (en)
DE (3) DE602004021495D1 (en)
ES (1) ES2327045T3 (en)
HK (1) HK1174158A1 (en)
PT (1) PT1673881E (en)
RU (1) RU2345490C2 (en)
WO (1) WO2005036783A1 (en)

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Also Published As

Publication number Publication date
WO2005036783A1 (en) 2005-04-21
US20060171711A1 (en) 2006-08-03
US7187861B2 (en) 2007-03-06
US8861953B2 (en) 2014-10-14
ES2327045T3 (en) 2009-10-23
US20140363157A1 (en) 2014-12-11
DE602004021495D1 (en) 2009-07-23
CN102611497B (en) 2016-05-11
EP1673881A4 (en) 2008-03-19
RU2006115478A (en) 2007-11-20
US9287974B2 (en) 2016-03-15
CA2541838C (en) 2009-06-30
EP1673881B1 (en) 2009-06-10
CN1833384B (en) 2012-03-21
EP1673881A1 (en) 2006-06-28
RU2345490C2 (en) 2009-01-27
CN1833384A (en) 2006-09-13
HK1174158A1 (en) 2013-05-31
US20070154212A1 (en) 2007-07-05
US20160197674A1 (en) 2016-07-07
US7995915B2 (en) 2011-08-09
PT1673881E (en) 2009-06-26
US9654213B2 (en) 2017-05-16
DE202004021208U1 (en) 2007-04-12
DE112004001310T5 (en) 2006-05-24
ATE433623T1 (en) 2009-06-15
CN102611497A (en) 2012-07-25
US20110293267A1 (en) 2011-12-01

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