Apparatus for detecting raman gain in an optical...

Details Apparatus for detecting raman gain in an optical... Apparatus for detecting raman gain in an optical...

H - Electricity

04

B

H04B 10/17 (2006.01) H04B 10/08 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2344869

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, P0 and 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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