Method and apparatus for monitoring optical links in an optical transparent network

摘要

The method involves detecting signatures, of switching nodes` i.e. an optical cross-connect and a reconfigurable optical add/drop multiplexer (32), carried by an optical signal transiting at a point of a transparent optical network by an analysis module (80), where each signature has information uniquely linked with one node of the network. A number of hops from the detected node signatures is determined by a calculation unit (81). The number of hops is compared to a predetermined threshold so as to detect a routing error in relation to the optical signal when the threshold exceeds. An independent claim is also included for a device for monitoring an optical connection path for a transparent optical network.