Method and system for monitoring performance of optical network

Details Method and system for monitoring performance of optical network Method and system for monitoring performance of optical network

H - Electricity

04

B

H04B 10/08 (2006.01) H04L 12/26 (2006.01)

Patent

CA 2384581

The invention describes methods and systems for monitoring the performance of an optical network by marking a group of optical signals with a set of identification tags which are unique to network characteristics. In the preferred embodiments, fiber identification (FID) and bundle identification (BID) tags are encoded into optical signals by marking an optical signal with low frequency dither tones whose frequencies are unique to the fiber section and to a bundle of fibers respectively. Detecting of the FID and BID tones provides more effective and accurate monitoring of performance of the optical network and allows determining of the network topology, e.g. paths of optical channels and traffic load through different fiber sections in the network. Other sets of hierarchically arranged identifiers encoded into optical signals have also been proposed, including band; conduit, city, region, country, etc. identifiers, as well as identifiers related to network security and service characteristics.

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