AU637629B2 - Optical communications system - Google Patents

Optical communications system

Info

Publication number
AU637629B2
AU637629B2 AU61826/90A AU6182690A AU637629B2 AU 637629 B2 AU637629 B2 AU 637629B2 AU 61826/90 A AU61826/90 A AU 61826/90A AU 6182690 A AU6182690 A AU 6182690A AU 637629 B2 AU637629 B2 AU 637629B2
Authority
AU
Australia
Prior art keywords
test
sequence
test pulse
pulses
transmission line
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.)
Ceased
Application number
AU61826/90A
Other languages
English (en)
Other versions
AU6182690A (en
Inventor
Dominik Drouet
Stephen Eric Gold
Simon Mark James
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of AU6182690A publication Critical patent/AU6182690A/en
Application granted granted Critical
Publication of AU637629B2 publication Critical patent/AU637629B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
    • G01M11/3118—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR using coded light-pulse sequences
    • 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
    • G01M11/39—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is projected from both sides of the fiber or waveguide end-face

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
AU61826/90A 1989-08-18 1990-08-09 Optical communications system Ceased AU637629B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898918862A GB8918862D0 (en) 1989-08-18 1989-08-18 Line monitoring system
GB8918862 1989-08-18

Publications (2)

Publication Number Publication Date
AU6182690A AU6182690A (en) 1991-04-03
AU637629B2 true AU637629B2 (en) 1993-06-03

Family

ID=10661821

Family Applications (1)

Application Number Title Priority Date Filing Date
AU61826/90A Ceased AU637629B2 (en) 1989-08-18 1990-08-09 Optical communications system

Country Status (7)

Country Link
EP (1) EP0486583A1 (fr)
JP (1) JPH05500107A (fr)
AU (1) AU637629B2 (fr)
CA (1) CA2064789A1 (fr)
GB (1) GB8918862D0 (fr)
NZ (1) NZ234860A (fr)
WO (1) WO1991002959A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2075961C (fr) * 1990-02-15 1999-01-05 Peter John Keeble Appareil de verification optique
KR970004993B1 (ko) * 1992-05-01 1997-04-10 스미도모덴기고오교오 가부시기가이샤 광선로의 식별방법
GB9524485D0 (en) * 1995-11-30 1996-01-31 Bicc Plc Device for interrogating an optical fibre network
GB2401738A (en) * 2003-05-16 2004-11-17 Radiodetection Ltd Optical fibre sensor
US9118412B2 (en) 2011-09-27 2015-08-25 Broadcom Corporation System and method for performing in-band reflection analysis in a passive optical network

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU9096591A (en) * 1990-12-20 1992-07-22 British Telecommunications Public Limited Company Optical communications system
AU627853B2 (en) * 1989-03-28 1992-09-03 Gec Plessey Telecommunications Limited Testing optical fibre links

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340428A1 (de) * 1983-11-09 1985-05-23 Wandel & Goltermann Gmbh & Co, 7412 Eningen Verfahren und einrichtung zur ueberwachung eines optischen nachrichtenuebertragungssystems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU627853B2 (en) * 1989-03-28 1992-09-03 Gec Plessey Telecommunications Limited Testing optical fibre links
AU9096591A (en) * 1990-12-20 1992-07-22 British Telecommunications Public Limited Company Optical communications system

Also Published As

Publication number Publication date
GB8918862D0 (en) 1989-09-27
CA2064789A1 (fr) 1991-02-19
AU6182690A (en) 1991-04-03
JPH05500107A (ja) 1993-01-14
EP0486583A1 (fr) 1992-05-27
WO1991002959A1 (fr) 1991-03-07
NZ234860A (en) 1992-10-28

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