CA2267141A1 - Dynamically reconfigurable optical add-drop multiplexers for wdm optical communication systems - Google Patents

Dynamically reconfigurable optical add-drop multiplexers for wdm optical communication systems

Info

Publication number
CA2267141A1
CA2267141A1 CA002267141A CA2267141A CA2267141A1 CA 2267141 A1 CA2267141 A1 CA 2267141A1 CA 002267141 A CA002267141 A CA 002267141A CA 2267141 A CA2267141 A CA 2267141A CA 2267141 A1 CA2267141 A1 CA 2267141A1
Authority
CA
Canada
Prior art keywords
optical
add
dropped
port
channels
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
CA002267141A
Other languages
French (fr)
Other versions
CA2267141C (en
Inventor
Victor Mizrahi
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.)
Ciena Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2267141A1 publication Critical patent/CA2267141A1/en
Application granted granted Critical
Publication of CA2267141C publication Critical patent/CA2267141C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • H04J14/0206—Express channels arrangements
    • 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
    • H04J14/0209—Multi-stage arrangements, e.g. by cascading multiplexers or demultiplexers
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0213—Groups of channels or wave bands arrangements
    • 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]
    • 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
    • H04Q2011/0011—Construction using wavelength conversion
    • 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
    • H04Q2011/0015—Construction using splitting combining
    • 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
    • H04Q2011/0035—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
    • H04Q2011/0041—Optical control

Abstract

The present invention provides a reconfigurable optical add-drop multiplexes for a wavelength division multiplexed optical communication system. The recon-figurable add-drop multiplexes includes a static optical add-drop multiplexes including an input port for receiv-ing optical signals from an optical transmission path in a wavelength division multiplexed optical communica-tion system, a drop port for routing optical channels to be removed from an optical transmission path, and add port for receiving optical channels to be added to an optical transmission path, and wavelength selecting means for selecting optical channels to be dropped from the optical transmission path. An optical path com-municates with the drop port, which includes an op-tical demultiplexer having an input port for receiving the dropped optical channels and plural demultiplexer output ports for separately outputting optical channels.
Plural demultiplexer optical paths optically communi-cate with the optical demultiplexer for receiving each of the dropped optical channels. Similarly, an optical path optically communicates with the add port of the static add-drop multiplexer. The add optical path includes an optical combiner having plural combiner input ports communicating with plural combiner optical paths for receiving optical channels to be added to the optical transmission path and an output port for outputting a combined optical signal comprising the optical channels received from the combiner input ports. An optical switch is positioned in one or more of the demultiplexer optical paths, which permits switching of a dropped optical channel between a receiver optical path for directing the dropped optical signal to an optical receiver and between a combiner optical path for routing the dropped optical channel back towards the optical transmission path optionally passing the dropped optical channel through a remodulator. Alternatively, the optical switch routes the dropped optical channel towards an optical receiver while permitting a new optical channel to be routed to add port of the static add-drop multiplexer.
CA002267141A 1997-07-30 1998-07-29 Dynamically reconfigurable optical add-drop multiplexers for wdm optical communication systems Expired - Fee Related CA2267141C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/902,810 US6069719A (en) 1997-07-30 1997-07-30 Dynamically reconfigurable optical add-drop multiplexers for WDM optical communication systems
US08/902,810 1997-07-30
PCT/US1998/015815 WO1999007097A1 (en) 1997-07-30 1998-07-29 Dynamically reconfigurable optical add-drop multiplexers for wdm optical communication systems

Publications (2)

Publication Number Publication Date
CA2267141A1 true CA2267141A1 (en) 1999-02-11
CA2267141C CA2267141C (en) 2002-01-22

Family

ID=25416426

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002267141A Expired - Fee Related CA2267141C (en) 1997-07-30 1998-07-29 Dynamically reconfigurable optical add-drop multiplexers for wdm optical communication systems

Country Status (5)

Country Link
US (1) US6069719A (en)
EP (1) EP0931393A1 (en)
AU (1) AU8672498A (en)
CA (1) CA2267141C (en)
WO (1) WO1999007097A1 (en)

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Also Published As

Publication number Publication date
CA2267141C (en) 2002-01-22
EP0931393A1 (en) 1999-07-28
WO1999007097A1 (en) 1999-02-11
AU8672498A (en) 1999-02-22
US6069719A (en) 2000-05-30

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