CA2218089C - Systeme optique multicanaux - Google Patents

Systeme optique multicanaux Download PDF

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Publication number
CA2218089C
CA2218089C CA002218089A CA2218089A CA2218089C CA 2218089 C CA2218089 C CA 2218089C CA 002218089 A CA002218089 A CA 002218089A CA 2218089 A CA2218089 A CA 2218089A CA 2218089 C CA2218089 C CA 2218089C
Authority
CA
Canada
Prior art keywords
node
switch
network
break
wavelength
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.)
Expired - Lifetime
Application number
CA002218089A
Other languages
English (en)
Other versions
CA2218089A1 (fr
Inventor
Bengt Johansson
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 US08/421,734 external-priority patent/US5680235A/en
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of CA2218089A1 publication Critical patent/CA2218089A1/fr
Application granted granted Critical
Publication of CA2218089C publication Critical patent/CA2218089C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H04B10/275—Ring-type networks
    • 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
    • H04J14/0283—WDM ring architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0287—Protection in WDM systems
    • H04J14/0289—Optical multiplex section protection
    • H04J14/0291—Shared protection at the optical multiplex section (1:1, n:m)

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)

Abstract

Réseau de communications doté d'une architecture de bus bidirectionnelle souple et présentant une structure en anneau. Chaque noeud du réseau comporte au moins un commutateur modal tout ou rien, c'est-à-dire un commutateur autorisant la transmission suivant cette configuration en anneau ou l'interdisant. Si le réseau comporte un commutateur modal par noeud, un commutateur modal est initialement mis hors circuit pour éviter les problèmes de circualtion d'émissions spontanées amplifiées rencontrés couramment dans les structures annulaires. S'il se produit une rupture de fibre, le commutateur modal (ou les commutateurs modaux) du noeud (ou des noeuds) proche(s) de la rupture et du même côté de la rupture et du noeud se met(tent) hors circuit et le commutateur modal qui était hors circuit avant la rupture se met en circuit, permettant au réseau de fonctionner essentiellement comme avant. Si le réseau comporte deux commutateurs modaux par noeud, deux commutateurs modaux proches l'un de l'autre dans des noeuds voisins sont initialement mis hors circuit, et s'il se produit une rupture de câble, les deux commutateurs modaux entourant la rupture se mettent hors circuit, tandis que les commutateurs modaux précédemment hors circuit se mettent en circuit. Le réseau assure une commutation de protection du traffic et résoud les problèmes de circulation d'émissions spontanées de manière simple et économique. Il permet également une reconfiguration des longueurs d'ondes tendant à abaisser le nombre des longueurs d'onde requis.
CA002218089A 1995-04-13 1996-04-03 Systeme optique multicanaux Expired - Lifetime CA2218089C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/421,734 US5680235A (en) 1995-04-13 1995-04-13 Optical multichannel system
US08/421,734 1995-04-13
PCT/SE1996/000441 WO1996032787A1 (fr) 1995-04-13 1996-04-03 Systeme optique multicanaux

Publications (2)

Publication Number Publication Date
CA2218089A1 CA2218089A1 (fr) 1996-10-17
CA2218089C true CA2218089C (fr) 2007-06-26

Family

ID=38279082

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002218089A Expired - Lifetime CA2218089C (fr) 1995-04-13 1996-04-03 Systeme optique multicanaux

Country Status (1)

Country Link
CA (1) CA2218089C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6631018B1 (en) 1997-08-27 2003-10-07 Nortel Networks Limited WDM optical network with passive pass-through at each node

Also Published As

Publication number Publication date
CA2218089A1 (fr) 1996-10-17

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