Digital optical spectral shaping

摘要

A method and system for generating an optical channel signal for transmission through an optical fiber link of an optical communications system. A digital filter processes an input data signal using a compensation function and a shaping function to generate a pair of multi-bit sample streams representing a target optical E-field envelope of the optical channel signal. A modulator modulates an optical carrier light using the pair of multi-bit sample streams to generate the optical channel signal. The compensation function is designed to at least partially compensate impairments of the optical fiber link. The predetermined shaping function is designed to modify a baseband spectrum of the target optical E-field envelope.

主权项

1. A method of generating an optical channel signal for transmission through an optical fiber link, the method comprising:
processing, by a digital filter, an input data signal using a spectral shaping function to generate at least one sample stream, the spectral shaping function designed to impose a predetermined shape to at least a portion of a baseband spectrum of the optical channel signal; and modulating, by a modulator, an optical carrier light based on the at least one sample stream, to generate the optical channel signal.