CA2318080A1 - Wavelength-selective optical add/drop using tilting micro-mirrors - Google Patents

Wavelength-selective optical add/drop using tilting micro-mirrors Download PDF

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Publication number
CA2318080A1
CA2318080A1 CA002318080A CA2318080A CA2318080A1 CA 2318080 A1 CA2318080 A1 CA 2318080A1 CA 002318080 A CA002318080 A CA 002318080A CA 2318080 A CA2318080 A CA 2318080A CA 2318080 A1 CA2318080 A1 CA 2318080A1
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CA
Canada
Prior art keywords
wavelength
beams
drop
add
mirrors
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.)
Granted
Application number
CA002318080A
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French (fr)
Other versions
CA2318080C (en
Inventor
W. John Tomlinson
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.)
Tellium Inc
Original Assignee
Tellium, Inc.
W. John Tomlinson
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 Tellium, Inc., W. John Tomlinson filed Critical Tellium, Inc.
Publication of CA2318080A1 publication Critical patent/CA2318080A1/en
Application granted granted Critical
Publication of CA2318080C publication Critical patent/CA2318080C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G02B6/28—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
    • G02B6/29304—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 diffraction, e.g. grating
    • G02B6/29305—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 diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
    • G02B6/2931—Diffractive element operating in reflection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]
    • 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
    • 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
    • H04Q2011/0022—Construction using fibre gratings
    • 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
    • H04Q2011/0026—Construction using free space propagation (e.g. lenses, mirrors)

Abstract

An optical switch particularly usable as a wavelength-division add/drop multiplexer (WADM) in a multi-wavelength communication system. Four multi-wavelength beams optically coupled to the input, output, add, and drop channels are arranged in parallel in a rectangular array and are incident upon a diffraction grating. The grating operating in one direction disperses the beams into their wavelength components and operating in the other direction recombines the wavelength components into a multi-wavelength beam. A lens focuses the components of the beams having a particular wavelength upon one of an array of tiltable micro-mirrors integrated on a silicon substrate. In one position, the mirror for a particular wavelength reflects that wavelength component from the input beam back to the output beam. In a second position, that mirror reflects that wavelength component from the input beam back to the drop beam and reflects that same wavelength component from the add beam back to the output beam. The same optics can be used for a second set of beams which are switched in synchronism with the first set. The array of mirrors can be fabricated to be tiltable to more than two positions so that the input beam can be selectively coupled to either the output beam or one of at least two drop beams while the ouput beam is correspondingly selectively coupled to either the input beam or one of at least two add beams.
CA002318080A 1998-01-27 1999-01-27 Wavelength-selective optical add/drop using tilting micro-mirrors Expired - Fee Related CA2318080C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/013,842 1998-01-27
US09/013,842 US5960133A (en) 1998-01-27 1998-01-27 Wavelength-selective optical add/drop using tilting micro-mirrors
PCT/US1999/001620 WO1999038348A1 (en) 1998-01-27 1999-01-27 Wavelength-selective optical add/drop using tilting micro-mirrors

Publications (2)

Publication Number Publication Date
CA2318080A1 true CA2318080A1 (en) 1999-07-29
CA2318080C CA2318080C (en) 2003-08-12

Family

ID=21762066

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002318080A Expired - Fee Related CA2318080C (en) 1998-01-27 1999-01-27 Wavelength-selective optical add/drop using tilting micro-mirrors

Country Status (5)

Country Link
US (1) US5960133A (en)
EP (1) EP1051876A1 (en)
AU (1) AU2471799A (en)
CA (1) CA2318080C (en)
WO (1) WO1999038348A1 (en)

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