[go: up one dir, main page]

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
Priority to AU76713/91A priority patent/AU7671391A/en
Priority to PCT/GB1991/000541 priority patent/WO1991015906A1/en
Pending legal-status Critical Current

Links

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computing Systems (AREA)
  • Optical Communication System (AREA)

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 (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

Applications Claiming Priority (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

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
AU666382B2 (en) * 1992-05-01 1996-02-08 Nippon Telegraph & Telephone Corporation Method for identifying 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
EP0191063B1 (en) * 1984-08-13 1992-05-13 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
WO1991015906A1 (en) 1991-10-17
AU7671391A (en) 1991-10-30

Similar Documents

Publication Publication Date Title
AU586349B2 (en) Optical fiber dispersion transformer
AU559570B2 (en) Optical fibre transmission
IL107826A0 (en) An optical communications system for transmitting information signals having different wavelengths over a same optical fiber
NO902317L (en) OPTICAL COMMUNICATION NETWORK.
EP0256809A3 (en) Optical fiber transmission system having dispersion transformer
AU5236590A (en) Optical communication system
GB1537014A (en) Optical equalizer for transmission of signals via multimode optical waveguides
EP0476566A3 (en) Optical communication systems and optical nodes for use therein
EP0535858A3 (en) Selection of transmission facilities using optical wavelength division multiplexing
AU7716491A (en) Single wavelength bidirectional optical fiber communication link
GB2268018B (en) Compensation of end-to-end optical dispersion of a lightwave signal transmitted along an optical transmission path
ATE199293T1 (en) OPTICAL SYSTEM WITH ONE OR MORE STABILIZED LASER SIGNAL SOURCES
CA2040756A1 (en) Long range bidirectional optical fiber communication link
GB9007897D0 (en) Method of controlling the transmission characteristics of an optical communications network
EP0779721A3 (en) Channel insertion in a WDM system
HUT47347A (en) Transmitter operating onthe principe of reflection to telecommunication system of two-way light guide
JPS57155850A (en) Duplex operation communication transmission line through optical guide fiber
FR2698225B1 (en) Optical transmission system, especially for cable video communications network.
JPS645127A (en) Optical transmitter
EP0590783A3 (en) Method of making an optical fiber communication system
DE3475229D1 (en) An optical component for use in fiber optic communication systems
JPS5488003A (en) Optical transmission network
PL289494A1 (en) Method of transmitting digital signals between communication equipment units through optical waveguide links
EP0458251A3 (en) Single wavelength bidirectional optical fiber communication link
AU1443683A (en) Uv light transmission by optical fibre