OPTICAL TELECOMMUNICATIONS NETWORKS

摘要

The invention relates to an optical telecommunications network comprising several nodes (N1...N8) interconnected by optical transmission paths that form several working rings (R1...R5), each of which passes via every node (N1...N8). Information is transmitted in the network at several different wavelengths. To ensure that the network can be implemented as cost-effectively as possible, it comprises N nodes (N1...N8), N/2 working rings (R1...R4), and N wavelengths (I1 to I4) in such a way that each node in the group of nodes is configured to receive signals at all the wavelengths in the group of wavelengths from only one of the rings in the group of rings as well as to transmit to at least all those rings in the group of rings from which the said node does not receive.