Autoprotected optical communication ring network

Details Autoprotected optical communication ring network Autoprotected optical communication ring network

2005-12-06

2005-12-06

Chan, Jason (Department: 2633)

Optical communications

Fault recovery

Bypass inoperative element

C398S003000, C398S007000, C398S020000, C398S050000, C398S059000, C398S079000, C398S083000

Reexamination Certificate

active

06973267

ABSTRACT:
An autoprotected optical communication ring network is disclosed. The ring network includes two optical carriers that are arranged for bidirectional transmission. Multiple optically reconfigurable nodes are connected along the optical carriers. The nodes communicate in pairs, defining non-overlapping working links. Under normal conditions, the nodes of each pair are optically configured to exchange optical signals over the working link at a first wavelength on the first carrier and at a second wavelength that is different from the first wavelength on the second carrier. During a failure condition, the first wavelength on the second carrier and the second wavelength on the first carrier are reserved for effecting a protection scheme, while the first wavelength on the first carrier and the second wavelength on the second carrier can still be used for unaffected working links.

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