GB2243967B - Optical crossbar switch - Google Patents

Optical crossbar switch

Info

Publication number
GB2243967B
GB2243967B GB9010692A GB9010692A GB2243967B GB 2243967 B GB2243967 B GB 2243967B GB 9010692 A GB9010692 A GB 9010692A GB 9010692 A GB9010692 A GB 9010692A GB 2243967 B GB2243967 B GB 2243967B
Authority
GB
United Kingdom
Prior art keywords
crossbar switch
optical crossbar
optical
switch
crossbar
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
GB9010692A
Other versions
GB9010692D0 (en
GB2243967A (en
Inventor
William Alden Crossland
Paul Townsend
Adrian Paul Sparks
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.)
Nortel Networks Ltd
STC PLC
Alcatel Submarine Networks UK Ltd
Nortel Networks Optical Components Ltd
Original Assignee
Northern Telecom Ltd
STC PLC
Northern Telecom Europe Ltd
STC Submarine Systems Ltd
STC Ltd
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 Northern Telecom Ltd, STC PLC, Northern Telecom Europe Ltd, STC Submarine Systems Ltd, STC Ltd filed Critical Northern Telecom Ltd
Priority to GB9010692A priority Critical patent/GB2243967B/en
Publication of GB9010692D0 publication Critical patent/GB9010692D0/en
Publication of GB2243967A publication Critical patent/GB2243967A/en
Application granted granted Critical
Publication of GB2243967B publication Critical patent/GB2243967B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G02B6/35—Optical coupling means having switching means
    • G02B6/351—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements
    • G02B6/353—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being a shutter, baffle, beam dump or opaque element
    • 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
    • G02B6/35—Optical coupling means having switching means
    • G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
    • G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
    • G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
GB9010692A 1990-05-12 1990-05-12 Optical crossbar switch Expired - Fee Related GB2243967B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9010692A GB2243967B (en) 1990-05-12 1990-05-12 Optical crossbar switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9010692A GB2243967B (en) 1990-05-12 1990-05-12 Optical crossbar switch

Publications (3)

Publication Number Publication Date
GB9010692D0 GB9010692D0 (en) 1990-07-04
GB2243967A GB2243967A (en) 1991-11-13
GB2243967B true GB2243967B (en) 1994-04-06

Family

ID=10675898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9010692A Expired - Fee Related GB2243967B (en) 1990-05-12 1990-05-12 Optical crossbar switch

Country Status (1)

Country Link
GB (1) GB2243967B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5325224A (en) * 1993-03-09 1994-06-28 California Institute Of Technology Time-multiplexed, optically-addressed, gigabit optical crossbar switch
GB2296098B (en) * 1994-12-15 1998-02-11 British Aerospace Optical cross bar switch assembly
US5798580A (en) * 1996-10-09 1998-08-25 Morozov; Valentin Contention free global interconnection
IL120089A0 (en) * 1997-01-27 1997-04-15 Yeda Res & Dev Compact optical crossbar switch
IL137193A0 (en) * 2000-07-06 2001-07-24 Radu Cosmin A method for fiber-optic-broadcasting and modular electro-optic-switch that uses this method
GB0126822D0 (en) * 2001-11-07 2002-01-02 King S College London Optical crossbar switch

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549313A (en) * 1982-02-03 1985-10-22 Boris Rozenwaig Supervisory device for an optoelectronic switching network
EP0224241A2 (en) * 1985-11-29 1987-06-03 AT&T Corp. A self-routing switch node combining electronic and photonic switching
EP0282071A2 (en) * 1987-03-12 1988-09-14 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Optical switching system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549313A (en) * 1982-02-03 1985-10-22 Boris Rozenwaig Supervisory device for an optoelectronic switching network
EP0224241A2 (en) * 1985-11-29 1987-06-03 AT&T Corp. A self-routing switch node combining electronic and photonic switching
EP0282071A2 (en) * 1987-03-12 1988-09-14 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Optical switching system

Also Published As

Publication number Publication date
GB9010692D0 (en) 1990-07-04
GB2243967A (en) 1991-11-13

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
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

Effective date: 20050512