Patent ID: 8693873
Filing Date: 2014-04-08
Classification: H04J

Abstract:
1. A reconfigurable optical add-drop multiplexer comprising: a first optical equalizer to precompensate a received optical signal for optical filtering effects to produce a first compensated optical signal; a first interleaver, coupled to the first optical equalizer, to separate the first compensated optical signal into a first odd optical signal and a first even optical signal, wherein the first optical equalizer precompensates for optical filtering effects caused by the first interleaver; a first odd wavelength selective switch, coupled to the first interleaver, configured to receive the first odd optical signal and generate a second odd optical signal; a first even wavelength selective switch, coupled to the first interleaver, configured to receive the first even optical signal and generate a second even optical signal; a second odd wavelength selective switch, coupled to the first odd wavelength selective switch, to receive the second odd optical signal from the first odd wavelength selective switch and generate a third odd optical signal; a second even wavelength selective switch, coupled to the first even wavelength selective switch to receive the second even optical signal from the first even wavelength selective switch and generate a third even optical signal; a second interleaver, coupled to the second odd wavelength selective switch and the second even wavelength selective switch, to combine the third odd optical signal and the third even optical signal to produce a combined optical signal; and a second optical equalizer, coupled to the second interleaver, to postcompensate the combined optical signal for optical filtering effects to produce an output optical signal, wherein the second optical equalizer postcompensates for optical filtering effects caused by the second interleaver.