GB9007897D0 - Method of controlling the transmission characteristics of an optical communications network - Google Patents

Method of controlling the transmission characteristics of an optical communications network

Info

Publication number
GB9007897D0
GB9007897D0 GB9007897A GB9007897A GB9007897D0 GB 9007897 D0 GB9007897 D0 GB 9007897D0 GB 9007897 A GB9007897 A GB 9007897A GB 9007897 A GB9007897 A GB 9007897A GB 9007897 D0 GB9007897 D0 GB 9007897D0
Authority
GB
United Kingdom
Prior art keywords
optical
lambda
network
controlling
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.)
Pending
Application number
GB9007897A
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
Priority to GB9007897A priority Critical patent/GB9007897D0/en
Publication of GB9007897D0 publication Critical patent/GB9007897D0/en
Application status is Pending legal-status Critical

Links

Abstract

An optical communications system includes a central station (2) coupled to a plurality of outstations (Oi) by an optical waveguide network (4) which can transmit optical signals to the outstations on a plurality of wavelengths ( lambda 1 to n). There is included a refractive grating (6) formed within an optical waveguide of the network (4) immediately before the outstation O1 which is reflective to optical signals of a wavelength ( lambda i) that propagate as a single mode in the network (4). The grating (6) permits optical signals of wavelengths greater and smaller than lambda i to pass so selectively blocking an optical wavelength channel from the outstation O1.
GB9007897A 1990-04-06 1990-04-06 Method of controlling the transmission characteristics of an optical communications network Pending GB9007897D0 (en)

Priority Applications (1)

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

Applications Claiming Priority (3)

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
AU76713/91A AU7671391A (en) 1990-04-06 1991-04-08 Optical communications system
PCT/GB1991/000541 WO1991015906A1 (en) 1990-04-06 1991-04-08 Optical communications system

Publications (1)

Publication Number Publication Date
GB9007897D0 true GB9007897D0 (en) 1990-06-06

Family

ID=10674058

Family Applications (1)

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

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
DE69321548D1 (en) * 1992-05-01 1998-11-19 Nippon Telegraph & Telephone A method for identifying an optical line
US5808761A (en) * 1993-07-15 1998-09-15 Gec-Marconi Limited Path integrity proving in optical communications systems
GB2280326B (en) * 1993-07-15 1997-04-23 Marconi Gec Ltd Optical communication 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
DE3586052D1 (en) * 1984-08-13 1992-06-17 United Technologies Corp A method for storing optical gratings in 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
WO1991015906A1 (en) 1991-10-17
AU7671391A (en) 1991-10-30

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