Infinera Corporation
APPARATUS AND METHOD TO REDUCE THE IMPACT OF COHERENT CROSSTALK IN OPTICAL NETWORKS

Abstract:

Optical networks, nodes and methods are disclosed. To solve the aggressor issue and to reduce the cross-talk caused by the aggressors in colorless, directionless and contentionless reconfigurable optical add drop multiplexer nodes, the present disclosure configures a reconfigurable filter at each port of a wavelength selective switch to permanently block one or more spectral regions that are adjacent to each wavelength (or to each group of wavelengths as in superchannels).