Patent ID: 9515767
Filing Date: 2016-12-06
CPC Classification: H04B,H04J

Claim Text:
1. An optical receiver, comprising: a splitter configured to split a received optical signal into N copies where N comprises a number of subcarriers; a polarization splitter for each of the N copies configured to split the received optical signal into two polarizations; a coherent optical hybrid for each of the N copies configured to receive the two polarizations of the received optical signal and an output from a local oscillator for each of the N copies, wherein the local oscillator comprises a frequency tuned substantially to match a corresponding subcarrier frequency; a postfilter located subsequent to the coherent optical hybrid configured to reject, for each of the N copies, adjacent subcarriers and adjacent symbols based on which copy of the N copies is being addressed and the postfilter configured to implement pulse-shape filtering complementary to transmitter pulse-shaping and to provide chromatic dispersion compensation; and a data decoder.