Patent ID: 6868234

Claim:
An optical telecommunications network comprising several nodes connected to one another by optical transmission paths that form several working rings, each of which passes via each node, in which network information is transmitted at several different wavelengths, wherein the network comprises a group of nodes including N nodes, a group of working rings including N rings, and a group of wavelengths including N wavelengths in such a way that each node in the group of nodes is configured to transmit signals at one wavelength in the group of wavelengths to all rings in the group of rings except to the ring from which it receives signals, and to receive signals at all wavelengths in the group of wavelengths except for its own transmitting wavelength from both directions in only one of the rings in the group of rings, whereby each node has an individual wavelength specific to the node, the wavelength being one of the wavelengths in the group of wavelengths, and a reception ring specific to the node, from which the other nodes in the group of nodes do not receive.