AU7671391A - Optical communications system - Google Patents

Optical communications system

Info

Publication number
AU7671391A
AU7671391A AU76713/91A AU7671391A AU7671391A AU 7671391 A AU7671391 A AU 7671391A AU 76713/91 A AU76713/91 A AU 76713/91A AU 7671391 A AU7671391 A AU 7671391A AU 7671391 A AU7671391 A AU 7671391A
Authority
AU
Australia
Prior art keywords
communications system
optical communications
optical
communications
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.)
Abandoned
Application number
AU76713/91A
Inventor
Jonathan Richard Armitage
David Brian Payne
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 AU7671391A publication Critical patent/AU7671391A/en
Abandoned legal-status Critical Current

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
    • H04B10/27—Arrangements for networking
    • H04B10/272—Star-type networks or tree-type networks
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0226—Fixed carrier allocation, e.g. according to service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0245—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU
    • H04J14/0246—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for downstream transmission, e.g. optical line terminal [OLT] to ONU using one wavelength per ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H04J14/0241—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths
    • H04J14/0242—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON
    • H04J14/0249—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU
    • H04J14/025—Wavelength allocation for communications one-to-one, e.g. unicasting wavelengths in WDM-PON for upstream transmission, e.g. ONU-to-OLT or ONU-to-ONU using one wavelength per ONU, e.g. for transmissions from-ONU-to-OLT or from-ONU-to-ONU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0282—WDM tree architectures
AU76713/91A 1990-04-06 1991-04-08 Optical communications system Abandoned AU7671391A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9007897A GB9007897D0 (en) 1990-04-06 1990-04-06 Method of controlling the transmission characteristics of an optical communications network
GB9007897 1990-04-06

Publications (1)

Publication Number Publication Date
AU7671391A true AU7671391A (en) 1991-10-30

Family

ID=10674058

Family Applications (1)

Application Number Title Priority Date Filing Date
AU76713/91A Abandoned AU7671391A (en) 1990-04-06 1991-04-08 Optical communications system

Country Status (3)

Country Link
AU (1) AU7671391A (en)
GB (1) GB9007897D0 (en)
WO (1) WO1991015906A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2112692C (en) * 1992-05-01 2004-09-21 Akira Inoue Method for identifying optical line
GB2280326B (en) * 1993-07-15 1997-04-23 Marconi Gec Ltd Optical communication systems
US5808761A (en) * 1993-07-15 1998-09-15 Gec-Marconi Limited Path integrity proving in optical communications systems
JP3411436B2 (en) * 1996-01-12 2003-06-03 Ｋｄｄｉ株式会社 Monitoring method of optical communication line

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916182A (en) * 1972-08-21 1975-10-28 Western Electric Co Periodic dielectric waveguide filter
US4474427A (en) * 1979-05-07 1984-10-02 Canadian Patents & Development Limited Optical fiber reflective filter
US4358851A (en) * 1980-02-28 1982-11-09 Xerox Corporation Fiber optic laser device and light emitter utilizing the device
WO1986001303A1 (en) * 1984-08-13 1986-02-27 United Technologies Corporation Method for impressing grating within fiber optics
US4912523A (en) * 1987-04-10 1990-03-27 At&T Bell Laboratories Optical fiber communication system comprising mode-stripping means

Also Published As

Publication number Publication date
GB9007897D0 (en) 1990-06-06
WO1991015906A1 (en) 1991-10-17

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