System and method for reduction of impact from unwanted signals in optical communications systems

摘要

A system and method have been described for operating on URZ and URZd coded representations of source data, as transmitted via an optical transmission system and received at a receiving location in an optical communications system, to substantially remove the effect of interference from unwanted optical and signal energy in the transmission path. After applying a subtraction operation and complementary mono-shot pulse generators to the resultant difference waveform, regenerated URZ and URZd coded representations of the source data are obtained which are substantially free of the effects of such unwanted optical and signal energy in the transmission path. The URZ and URZd coded data are then combined in an addition operation to produce a UNRZ coded representation of the source data.