WO2002069008A8 - An optical switch using total internal reflection and a method of switching signals using the same - Google Patents

An optical switch using total internal reflection and a method of switching signals using the same

Info

Publication number
WO2002069008A8
WO2002069008A8 PCT/US2002/005461 US0205461W WO02069008A8 WO 2002069008 A8 WO2002069008 A8 WO 2002069008A8 US 0205461 W US0205461 W US 0205461W WO 02069008 A8 WO02069008 A8 WO 02069008A8
Authority
WO
WIPO (PCT)
Prior art keywords
portions
optical switch
interface
same
internal reflection
Prior art date
Application number
PCT/US2002/005461
Other languages
French (fr)
Other versions
WO2002069008A1 (en
Inventor
Jingyun Zhang
Original Assignee
Accelight Investments Inc
Jingyun Zhang
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
Priority claimed from CA002339466A external-priority patent/CA2339466A1/en
Application filed by Accelight Investments Inc, Jingyun Zhang filed Critical Accelight Investments Inc
Priority to TW091118450A priority Critical patent/TW546499B/en
Publication of WO2002069008A1 publication Critical patent/WO2002069008A1/en
Publication of WO2002069008A8 publication Critical patent/WO2002069008A8/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/35—Switches specially adapted for specific applications
    • H04L49/356—Switches specially adapted for specific applications for storage area networks
    • H04L49/357—Fibre channel switches
    • 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
    • G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
    • 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
    • G02B6/3522—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element enabling or impairing total internal reflection
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective
    • G02F2203/023—Function characteristic reflective total internal reflection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/101—Packet switching elements characterised by the switching fabric construction using crossbar or matrix
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0066—Provisions for optical burst or packet networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0024—Construction using space switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0033—Construction using time division switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0035—Construction using miscellaneous components, e.g. circulator, polarisation, acousto/thermo optical
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0037—Operation
    • H04Q2011/0039—Electrical control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0037—Operation
    • H04Q2011/005—Arbitration and scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0052—Interconnection of switches
    • H04Q2011/0056—Clos
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0064—Arbitration, scheduling or medium access control aspects

Abstract

An optical switch (100) includes an optical signal transmitting electro-optic crystal (200) having at least one first portion (204) and at least one second portion. At least one of these portions is formed from a material which exhibits a change in index refraction upon the application of an electric field and the first and second portions define a switching interface (205) therebetween. A signal source is provided for emitting a signal along an unguided beam path (203), the unguided beam path intersecting the switching interface at an incident angle. An electric field generator generates an electrical field in at least one of the first and second portions of the crystal with the electrical field causing a change in an index of refraction for at least one of the first and second portions sufficient to create a critical angle at the interface smaller than the incident angle to reflect the signal off the interface.
PCT/US2002/005461 2001-02-22 2002-02-22 An optical switch using total internal reflection and a method of switching signals using the same WO2002069008A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW091118450A TW546499B (en) 2001-02-22 2002-08-15 An optical switch using total internal reflection and a method of switching signals using the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US27082401P 2001-02-22 2001-02-22
US60/270,824 2001-02-22
CA002339466A CA2339466A1 (en) 2001-03-06 2001-03-06 Optical switch comprised of electro-optic crystal based on total internal reflection
CA2,339,466 2001-03-06

Publications (2)

Publication Number Publication Date
WO2002069008A1 WO2002069008A1 (en) 2002-09-06
WO2002069008A8 true WO2002069008A8 (en) 2003-10-23

Family

ID=25682430

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/005461 WO2002069008A1 (en) 2001-02-22 2002-02-22 An optical switch using total internal reflection and a method of switching signals using the same

Country Status (1)

Country Link
WO (1) WO2002069008A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795433A (en) * 1972-05-22 1974-03-05 Rca Corp Voltage induced optical waveguide means
US4474434A (en) * 1981-12-07 1984-10-02 Gte Laboratories Incorporated Polarization-insensitive optical switch apparatus
JPS58145921A (en) * 1982-02-25 1983-08-31 Fujitsu Ltd Multi-channel optical switch
US4919522A (en) * 1988-02-25 1990-04-24 Geo-Centers, Inc. Optical switch having birefringent element
US5090824A (en) * 1990-07-31 1992-02-25 Geo-Centers, Inc. Fast optical switch having reduced light loss
US5305136A (en) * 1992-03-31 1994-04-19 Geo-Centers, Inc. Optically bidirectional fast optical switch having reduced light loss

Also Published As

Publication number Publication date
WO2002069008A1 (en) 2002-09-06

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Legal Events

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