Optical communication method and apparatus

摘要

A method and an apparatus for an optical communication system are provided, the method comprising the steps of generating a first optical signal and a second optical signal, multiplexing the first optical signal in a first optical channel and a second optical signal in a second optical channel, the first and the second optical channels being spectrally separated neighboring channels, measuring the level of out-of-band optical power associated with the second optical channel and frequency shifting the second optical channel when a frequency drift of the first optical channel occurs, so that the level of out-of-band optical power associated with the second optical channel is held constant.