A communications network architecture

H - Electricity – 04 – B

Patent

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H04B 10/20 (2006.01) H04B 10/213 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2402198

A communications network (2) including a number of optical fibre loops (8) having respective access nodes (10), an optical wavelength group for traffic within the loop, and at least one other optical wavelength group for traffic to the another loop. The network (2) has an optical cross-connect (4) for routing traffic between the loops by selecting the wavelength groups. The optical cross-connect (4) is passive, and the network (2) may be a metropolitan area network with traffic being carried by WDM signals.

On décrit un réseau (2) de communications qui comprend une pluralité de lignes (8) à fibres optiques ayant des noeuds d'accès respectifs (10), un groupe de longueurs d'onde optique destiné au trafic dans la ligne et au moins un autre groupe de longueurs d'onde optique pour le trafic vers une autre ligne. Le réseau (2) comporte une connexion transversale optique (4) qui achemine le trafic entre les lignes en sélectionnant les groupes de longueurs d'onde. La connexion transversale optique (2) est passive et le réseau peut être un réseau métropolitain dans lequel le trafic est effectué au moyen de signaux MLR.

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