WO2001095009A3 - Method and apparatus for mirror control in an optical cross-connect switch - Google Patents

Method and apparatus for mirror control in an optical cross-connect switch Download PDF

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Publication number
WO2001095009A3
WO2001095009A3 PCT/US2001/017767 US0117767W WO0195009A3 WO 2001095009 A3 WO2001095009 A3 WO 2001095009A3 US 0117767 W US0117767 W US 0117767W WO 0195009 A3 WO0195009 A3 WO 0195009A3
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
mirrors
drifts
working
surrogate
Prior art date
Application number
PCT/US2001/017767
Other languages
French (fr)
Other versions
WO2001095009A2 (en
Inventor
Peter Hunt
Original Assignee
Calient Networks Inc
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 Calient Networks Inc filed Critical Calient Networks Inc
Publication of WO2001095009A2 publication Critical patent/WO2001095009A2/en
Publication of WO2001095009A3 publication Critical patent/WO2001095009A3/en

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
    • G02B6/3586—Control or adjustment details, e.g. calibrating
    • 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
    • G02B6/3512—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror
    • G02B6/3518—Optical coupling means having switching means involving stationary waveguides with moving interposed optical elements the optical element being reflective, e.g. mirror the reflective optical element being an intrinsic part of a MEMS device, i.e. fabricated together with the MEMS device
    • 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
    • G02B6/3554—3D constellations, i.e. with switching elements and switched beams located in a volume
    • G02B6/3556—NxM switch, i.e. regular arrays of switches elements of matrix type constellation
    • 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
    • G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
    • G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
    • G02B6/357—Electrostatic force

Abstract

An embodiment of the present invention provides for a method and a system for updating a table of mirror positions to compensate for drifts experienced by the mirrors. The drifts for at least one surrogate mirror in a first mirror are measured. The first mirror array comprises a plurality of working mirrors and surrogate mirrors. The working mirror carries working light in a working path and the surrogate mirror carries test light in a calibration path. The drifts for the working mirrors are estimated using the drifts measured from the surrogate mirrors. The mirror positions of the surrogate mirrors and the working mirrors are updated to compensate for the measured drifts and the estimated drifts respectively. The mirror positions point each mirror in the first mirror array to a plurality of target mirrors in a second mirror array.
PCT/US2001/017767 2000-06-05 2001-05-31 Method and apparatus for mirror control in an optical cross-connect switch WO2001095009A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US58670900A 2000-06-05 2000-06-05
US09/586,709 2000-06-05

Publications (2)

Publication Number Publication Date
WO2001095009A2 WO2001095009A2 (en) 2001-12-13
WO2001095009A3 true WO2001095009A3 (en) 2002-10-17

Family

ID=24346836

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/017767 WO2001095009A2 (en) 2000-06-05 2001-05-31 Method and apparatus for mirror control in an optical cross-connect switch

Country Status (1)

Country Link
WO (1) WO2001095009A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6610974B1 (en) 2000-06-05 2003-08-26 Calient Networks, Inc. Positioning a movable reflector in an optical switch
US6587611B1 (en) 2000-06-06 2003-07-01 Calient Networks, Inc. Maintaining path integrity in an optical switch
US6678437B2 (en) * 2001-03-30 2004-01-13 Analog Devices, Inc. Method of and architecture for optically switching light communication signals in fiber optic networks and the like
JP3829180B2 (en) * 2002-02-08 2006-10-04 飛島建設株式会社 Ground deformation measurement system using optical fiber sensor
JP4127481B2 (en) 2002-05-08 2008-07-30 富士通株式会社 Control apparatus and control method for optical signal exchanger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05107485A (en) * 1991-10-18 1993-04-30 Nippon Telegr & Teleph Corp <Ntt> Optical connection module
DE19757181A1 (en) * 1997-12-19 1999-07-01 Bosch Gmbh Robert Arrangement for coupling glass fibers
WO1999067666A1 (en) * 1998-06-05 1999-12-29 Astarte Fiber Networks, Inc. Mirror based fiber optic switch and control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05107485A (en) * 1991-10-18 1993-04-30 Nippon Telegr & Teleph Corp <Ntt> Optical connection module
DE19757181A1 (en) * 1997-12-19 1999-07-01 Bosch Gmbh Robert Arrangement for coupling glass fibers
WO1999067666A1 (en) * 1998-06-05 1999-12-29 Astarte Fiber Networks, Inc. Mirror based fiber optic switch and control system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LAU K Y: "MEM'S THE WORD FOR OPTICAL BEAM MANIPULATION", IEEE CIRCUITS AND DEVICES MAGAZINE, IEEE INC. NEW YORK, US, vol. 13, no. 4, July 1997 (1997-07-01), pages 11 - 18, XP000831634, ISSN: 8755-3996 *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 461 (P - 1598) 23 August 1993 (1993-08-23) *

Also Published As

Publication number Publication date
WO2001095009A2 (en) 2001-12-13

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