Optical communications – Diagnostic testing – Fault detection
Reexamination Certificate
2008-07-01
2008-07-01
Singh, Dalzid (Department: 2613)
Optical communications
Diagnostic testing
Fault detection
C398S031000, C398S033000, C398S034000, C398S067000, C398S068000
Reexamination Certificate
active
10400164
ABSTRACT:
An optical medium, whether inside or outside an internet/telecommunications backbone, is managed using a management signal at a wavelength which is distinct from wavelengths of service signals. A multiplexer multiplexes the management signal onto the optical medium, after which a demultiplexer demultiplexes the management signal for analysis. Performance of customer channels may be inferred from performance of the management signal.
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Hamilton Brook Smith & Reynolds P.C.
Singh Dalzid
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