Verification of path integrity in optical switch network

Details Verification of path integrity in optical switch network Verification of path integrity in optical switch network

2005-12-27

2005-12-27

Leung, Christina Y (Department: 2633)

Optical communications

Diagnostic testing

Fault detection

C398S012000, C398S033000

Reexamination Certificate

active

06980736

ABSTRACT:
To verify the integrity of optical paths through and among optical switches, optical signals are provided with co-propagating supplemental signals. The supplemental signals preferably have at least one characteristic which allows distinguishing one supplemental signal from another. Associated with a port of a switch, means are provided for detecting a supplemental signal and determining if the supplemental signal indicates that a desired optical signal is passing through the port as expected and desired. Means for imparting or changing the distinguishing characteristic of a supplemental signal may also be employed to facilitate verifying the passage of optical signals.

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