Topology discovery in optical WDM networks

Details Topology discovery in optical WDM networks Topology discovery in optical WDM networks

2005-11-22

2005-11-22

Pascal, Leslie (Department: 2633)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S025000, C398S032000

Reexamination Certificate

active

06968131

ABSTRACT:
In an optical WDM network, each optical channel is modulated with a respective channel identity. Detectors, conveniently at multiplex ports of optical band filters, detect the channel identities of all of the optical channels in an optical signal at the respective points to produce respective channel lists. A network management system determines channel lists for through ports of the optical band filters, identifies matching pairs of channel lists to determine a topology of each node and to identify optical paths entering or leaving each node, and identifies matching pairs of channel lists for these paths to determine an inter-node topology of the network. The channel identity detector points can alternatively be at the optical paths entering or leaving each node.

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