CHANNEL PROTECTION IN DATA-COMMUNICATION AND DATA TELECOMMUNICATION SYSTEM

摘要

The present invention relates to an optical fibre network that includes a cable having at least two optical fibres and at least two nodes interconnected with the cable, so that the nodes will be disposed in a ring. The nodes and the cable together form a bidirectional bus for transmitting and receiving on wavelength channels. Each node includes at least one spare transmitter and at least one spare receiver having a particular wavelength, and the network includes means for detecting faults on a transmitter/receiver in a node. The invention also relates to a method of detecting faults in the nodes and of switching from a degraded transmitter/receiver to the spare transmitter/spare receiver in the abovementioned optical fibre network.