Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2005-12-27
2005-12-27
Pascal, Leslie (Department: 2633)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S197000, C398S177000, C398S181000, C398S175000, C398S033000, C398S094000
Reexamination Certificate
active
06980740
ABSTRACT:
A unique sensor is used to detect a transmission impairment that may have affected incoming optical channel signals. The sensor, more specifically, selects a group of the incoming channel signals and generates a first power signal, P0, over the selected group of signals and generates a second power signals, P1, over a weighted version of the selected group of channel signals. The sensor then generates, as a function of the first and second power signals, P0and P1, a signal indicative of whether the particular transmission impairment affected the levels of individual ones of the incoming channel signals. If so, then control apparatus offsets the impairment accordingly.
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Denkin Nathan M.
Lin Wenhua
Shehadeh Fatimah
Lucent Technologies - Inc.
Nguyen Chau M.
Pascal Leslie
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