Patent ID: 9520950
Filing Date: 2016-12-13
CPC Classification: H04B

Claim Text:
1. A method for compensating for dispersion imparted to a communications signal propagating through an optical link in an optical communication system, the method comprising: digitally processing an electrical input signal to be propagated through the optical link, according to a first compensation function, to generate a predistorted electrical signal, the first compensation function determined to mitigate chromatic dispersion imparted to the communications signal by the optical link; filtering the predistorted digital signal through a transmitter peaking filter; converting the predistorted electrical signal into a predistorted optical signal for transmission through the optical link after the filtering; generating a receiver electrical signal in response to a detection of the predistorted optical signal after propagation through the optical link; and digitally processing the receiver electrical signal according to a second compensation function to generate an output signal, the second compensation function determined to mitigate polarization mode dispersion, an extent of the mitigation of the polarization mode dispersion being dependent upon an extent to which the chromatic dispersion is mitigated, wherein the digitally processing the electrical input signal and the digitally processing the receiver electrical signal compensate for chromatic dispersion and polarization mode dispersion, respectively, at baud rates exceeding 15 Gbaud.