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GB2264792B - Optical communications - Google Patents

Optical communications

Info

Publication number
GB2264792B
GB2264792B GB9304062A GB9304062A GB2264792B GB 2264792 B GB2264792 B GB 2264792B GB 9304062 A GB9304062 A GB 9304062A GB 9304062 A GB9304062 A GB 9304062A GB 2264792 B GB2264792 B GB 2264792B
Authority
GB
United Kingdom
Prior art keywords
optical communications
communications
optical
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.)
Expired - Fee Related
Application number
GB9304062A
Other versions
GB2264792A (en
GB9304062D0 (en
Inventor
John Howard Couper
Stephen William Newell
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 GB9304062D0 publication Critical patent/GB9304062D0/en
Publication of GB2264792A publication Critical patent/GB2264792A/en
Application granted granted Critical
Publication of GB2264792B publication Critical patent/GB2264792B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/67—Optical arrangements in the receiver
    • H04B10/671—Optical arrangements in the receiver for controlling the input optical signal
    • H04B10/675—Optical arrangements in the receiver for controlling the input optical signal for controlling the optical bandwidth of the input signal, e.g. spectral filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/03—WDM arrangements
    • H04J14/0307—Multiplexers; Demultiplexers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02052—Optical fibres with cladding with or without a coating comprising optical elements other than gratings, e.g. filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/29368—Light guide comprising the filter, e.g. filter deposited on a fibre end
    • 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
    • H04B10/40—Transceivers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3845—Details of mounting fibres in ferrules; Assembly methods; Manufacture ferrules comprising functional elements, e.g. filters

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Communication System (AREA)
GB9304062A 1992-03-02 1993-03-01 Optical communications Expired - Fee Related GB2264792B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929204493A GB9204493D0 (en) 1992-03-02 1992-03-02 Optical communications

Publications (3)

Publication Number Publication Date
GB9304062D0 GB9304062D0 (en) 1993-04-14
GB2264792A GB2264792A (en) 1993-09-08
GB2264792B true GB2264792B (en) 1995-10-18

Family

ID=10711353

Family Applications (2)

Application Number Title Priority Date Filing Date
GB929204493A Pending GB9204493D0 (en) 1992-03-02 1992-03-02 Optical communications
GB9304062A Expired - Fee Related GB2264792B (en) 1992-03-02 1993-03-01 Optical communications

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929204493A Pending GB9204493D0 (en) 1992-03-02 1992-03-02 Optical communications

Country Status (1)

Country Link
GB (2) GB9204493D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5841583A (en) * 1996-02-09 1998-11-24 Corning Incorporated Multi-path interference filter
US6046854A (en) 1996-02-09 2000-04-04 Corning Incorporated Multi-path interference filter with reflective surfaces
GB2338079B (en) * 1998-06-04 2003-02-19 Bookham Technology Ltd Optical waveguide attenuation
GB2356262A (en) * 1999-11-11 2001-05-16 Schweizer Kashyap Hannah Usha Gap or lens located bewteen two optic fibres to prevent heat spot damage

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891302A (en) * 1973-09-28 1975-06-24 Western Electric Co Method of filtering modes in optical waveguides
US3916182A (en) * 1972-08-21 1975-10-28 Western Electric Co Periodic dielectric waveguide filter
GB2155200A (en) * 1983-08-15 1985-09-18 David B Chang Intrawaveguide fiber optic beamsplitter/coupler
EP0242218A2 (en) * 1986-04-17 1987-10-21 Babcock-Hitachi Kabushiki Kaisha Coal-water slurry producing system
US4837044A (en) * 1987-01-23 1989-06-06 Itt Research Institute Rugate optical filter systems
WO1991010148A1 (en) * 1989-12-26 1991-07-11 United Technologies Corporation Optical waveguide embedded transverse spatial mode discrimination filter
EP0438759A2 (en) * 1989-12-26 1991-07-31 United Technologies Corporation Optical waveguide embedded light redirecting Bragg grating arrangement
EP0480370A1 (en) * 1990-10-08 1992-04-15 Fujitsu Limited Optical waveguide type wavelength filter

Patent Citations (8)

* 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
US3891302A (en) * 1973-09-28 1975-06-24 Western Electric Co Method of filtering modes in optical waveguides
GB2155200A (en) * 1983-08-15 1985-09-18 David B Chang Intrawaveguide fiber optic beamsplitter/coupler
EP0242218A2 (en) * 1986-04-17 1987-10-21 Babcock-Hitachi Kabushiki Kaisha Coal-water slurry producing system
US4837044A (en) * 1987-01-23 1989-06-06 Itt Research Institute Rugate optical filter systems
WO1991010148A1 (en) * 1989-12-26 1991-07-11 United Technologies Corporation Optical waveguide embedded transverse spatial mode discrimination filter
EP0438759A2 (en) * 1989-12-26 1991-07-31 United Technologies Corporation Optical waveguide embedded light redirecting Bragg grating arrangement
EP0480370A1 (en) * 1990-10-08 1992-04-15 Fujitsu Limited Optical waveguide type wavelength filter

Also Published As

Publication number Publication date
GB9204493D0 (en) 1992-04-15
GB2264792A (en) 1993-09-08
GB9304062D0 (en) 1993-04-14

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee