Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2007-08-14
2007-08-14
Pascal, Leslie (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S012000, C398S020000, C398S033000
Reexamination Certificate
active
10439631
ABSTRACT:
The present invention provides a method and system for monitoring composite optical signals carried over plural fiber-optic lines within an optical network. Methods and systems in accordance with the present invention each utilize a single OPM to monitor each one of a set of sample proportions of composite signals split off from respective fiber-optic lines. In one embodiment, an optical performance monitoring system comprises a plurality of fiber-optic lines, each fiber-optic line carrying a respective composite optical signal, a plurality of optical taps, each optical tap being optically coupled to a respective one of the fiber-optic lines and splitting a portion of the composite optical signal thereof, a plurality of optical switches, each optical switch being optically coupled to a respective one of the optical taps and comprising either an Open configuration and a Closed configuration, an optical coupler, and an Optical Performance Monitor (OPM).
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U.S. Appl. No. 60/413,063, Barbarossa, Giovanni, filed Sep. 24, 2002.
Avanex Corporation
Pascal Leslie
Patterson & Sheridan LLP
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