Method of controlling optical signal power at an add/drop...

Details Method of controlling optical signal power at an add/drop... Method of controlling optical signal power at an add/drop...

H - Electricity

04

J

H04J 14/02 (2006.01) H04B 10/20 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2385647

Optical signal power levels for selected optical channels processed within an add/drop node in a wavelength division multiplexed (WDM) system are adjusted as a function of variations in signal power in an incoming WDM signal caused by gain ripple. In particular, a "ripple fitting" method is described whereby the optical signal power of individual optical channels being added at the add/drop node are adjusted to levels that correspond to the ripple profile of other optical channels being routed through the add/drop node. In this manner, the gain ripple in the WDM signal being output from the add/drop node approximately corresponds to the gain ripple in the incoming WDM signal at the node.

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