CA2068252A1 - Wavelength-assignable optical communication system - Google Patents

Wavelength-assignable optical communication system

Info

Publication number
CA2068252A1
CA2068252A1 CA2068252A CA2068252A CA2068252A1 CA 2068252 A1 CA2068252 A1 CA 2068252A1 CA 2068252 A CA2068252 A CA 2068252A CA 2068252 A CA2068252 A CA 2068252A CA 2068252 A1 CA2068252 A1 CA 2068252A1
Authority
CA
Canada
Prior art keywords
wavelength
terminal
control unit
network channel
communication system
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
CA2068252A
Other languages
French (fr)
Other versions
CA2068252C (en
Inventor
Tadahiko Yasui
Aritomo Uemura
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.)
Mitsubishi Electric Corp
Original Assignee
Tadahiko Yasui
Aritomo Uemura
Mitsubishi Denki Kabushiki Kaisha
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 Tadahiko Yasui, Aritomo Uemura, Mitsubishi Denki Kabushiki Kaisha filed Critical Tadahiko Yasui
Publication of CA2068252A1 publication Critical patent/CA2068252A1/en
Application granted granted Critical
Publication of CA2068252C publication Critical patent/CA2068252C/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0282—WDM tree architectures

Abstract

An optical communication system wherein a wavelength used by a terminal for transmission and reception is assigned thereto in accordance with a call request from the terminal.
When the terminal makes a call request at a control wavelength, a wavelength control unit selects a wavelength to be used by the calling terminal out of the wavelengths unused on a wavelength-multiplex communication path, and informs the terminal of the selected wavelength at the control wavelength. The terminal adjusts the wavelength of transmitting and receiving circuits to the informed wavelength.
As an example of the optical communication system is disclosed a wavelength-sharing optical exchange system.
A connection request from a terminal is transmitted through a wavelength-multiplex communication path at a control wavelength. The wavelength is directed through a subscriber line control unit to a network channel control unit. The network channel control unit retrieves a wavelength table contained therein to decide if the terminal at the other end is available. If the called terminal is available, the network channel control unit selects a usable wavelength out of the wavelengths recorded on wavelength table and sets a switchboard such that the switchboard can operate at the selected wavelength. Further, the network channel control unit informs the calling and called terminals of the selected wavelength at the control wavelength via the subscriber-line control units. Both of the terminals then set transmitting and receiving wavelengths to the selected wavelength.
CA002068252A 1991-05-10 1992-05-08 Wavelength-assignable optical communication system Expired - Fee Related CA2068252C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3104583A JPH04334134A (en) 1991-05-10 1991-05-10 Optical communication equipment
JP104583/1991 1991-05-10

Publications (2)

Publication Number Publication Date
CA2068252A1 true CA2068252A1 (en) 1992-11-11
CA2068252C CA2068252C (en) 1998-06-30

Family

ID=14384461

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002068252A Expired - Fee Related CA2068252C (en) 1991-05-10 1992-05-08 Wavelength-assignable optical communication system

Country Status (3)

Country Link
US (1) US5319485A (en)
JP (1) JPH04334134A (en)
CA (1) CA2068252C (en)

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FR2690800B1 (en) * 1992-04-30 1995-05-12 Cit Alcatel Optical system, automatically configurable, for the connection of subscriber installations to a switching center of a telecommunications network.
FR2690799B1 (en) * 1992-04-30 1994-06-10 Cit Alcatel OPTICAL SYSTEM FOR CONNECTING SUBSCRIBER FACILITIES TO A SWITCHING CENTER OF A TELECOMMUNICATION NETWORK PROVIDING INTERACTIVE AND NON-INTERACTIVE SERVICES.
US5485297A (en) * 1992-10-09 1996-01-16 Alcatel N.V. Optical switching matrix
ATE220834T1 (en) * 1993-04-23 2002-08-15 Canon Kk NETWORK WITH WAVELENGTH MULTIPLEX
JPH07204540A (en) * 1993-09-20 1995-08-08 Nippon Paint Co Ltd Method for supplying powder coating material and application thereof device
US5774244A (en) * 1994-01-18 1998-06-30 British Telecommunications Public Limited Company Optical communications networks
US5781537A (en) * 1995-07-07 1998-07-14 International Business Machines Corporation Setting up, taking down and maintaining connections in a communications network
JPH0983492A (en) * 1995-09-19 1997-03-28 Canon Inc Wavelength control method and communication system
JPH09153907A (en) * 1995-11-28 1997-06-10 Matsushita Electric Ind Co Ltd Bus type communication network
JP3639682B2 (en) * 1995-12-21 2005-04-20 キヤノン株式会社 Network system and node device
JP3055603B2 (en) * 1996-07-19 2000-06-26 日本電気株式会社 Optical network
DE19649870A1 (en) * 1996-12-02 1998-06-04 Alsthom Cge Alcatel Optical switching unit, in particular for switching over to replacement components in optical transmission systems
JPH10164022A (en) * 1996-12-04 1998-06-19 Nec Corp Submarine branching device
US5915051A (en) * 1997-01-21 1999-06-22 Massascusetts Institute Of Technology Wavelength-selective optical add/drop switch
US6631018B1 (en) 1997-08-27 2003-10-07 Nortel Networks Limited WDM optical network with passive pass-through at each node
CA2304280C (en) 1997-09-29 2003-07-08 Tollgrade Communications, Inc. Frequency agile transponder
WO2000067451A1 (en) * 1999-04-28 2000-11-09 The Furukawa Electric Co., Ltd. Communication system and its method, and communication device
US6570683B1 (en) * 1999-10-28 2003-05-27 At&T Corp. Wavelength re-use
EP1126650A3 (en) * 2000-02-18 2007-01-03 Ericsson AB Optical communication system
US6583901B1 (en) * 2000-02-23 2003-06-24 Henry Hung Optical communications system with dynamic channel allocation
US7706383B2 (en) * 2001-07-31 2010-04-27 Alcatel-Lucent Usa Inc. Minimum contention distributed wavelength assignment in optical transport networks
JP3851836B2 (en) * 2002-04-19 2006-11-29 富士通株式会社 Wavelength multiplexing transmission system and wavelength multiplexing transmission apparatus
US9020350B2 (en) 2011-06-24 2015-04-28 Techsys Insights Optical spectrum recovery
JP5315466B1 (en) * 2012-09-06 2013-10-16 ソフトバンクテレコム株式会社 Wavelength monitoring system
JP2019519178A (en) 2016-06-01 2019-07-04 ロシュメア・インコーポレイテッドＲｏｓｈｍｅｒｅ， Ｉｎｃ． Optical switch data network
US10536237B2 (en) 2016-06-20 2020-01-14 Nippon Telegraph And Telephone Corporation Optical transceiver and control method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409687A (en) * 1978-10-30 1983-10-11 General Electric Company Arrangement and method for establishing radio communication in a system
FR2593654B1 (en) * 1986-01-28 1988-03-11 Comp Generale Electricite COHERENT PHOTON TELECOMMUNICATIONS DEVICE.
US4759011A (en) * 1986-03-03 1988-07-19 Polaroid Corporation Intranetwork and internetwork optical communications system and method
JPH0683128B2 (en) * 1986-03-27 1994-10-19 岩崎通信機株式会社 Wireless paging communication system
US4789980A (en) * 1986-08-18 1988-12-06 American Telephone & Telegraph Company, At&T Bell Laboratories Switching techniques for FDM communication systems
JPH0636621B2 (en) * 1986-10-15 1994-05-11 日本電気株式会社 Optical switch
US4797879A (en) * 1987-06-05 1989-01-10 American Telephone And Telegraph Company At&T Bell Laboratories Packet switched interconnection protocols for a star configured optical lan
JPH02162939A (en) * 1988-12-16 1990-06-22 Canon Inc Optical fiber communication system
US5212577A (en) * 1990-01-19 1993-05-18 Canon Kabushiki Kaisha Optical communication equipment and optical communication method

Also Published As

Publication number Publication date
US5319485A (en) 1994-06-07
JPH04334134A (en) 1992-11-20
CA2068252C (en) 1998-06-30

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