Advanced dispersion map for transmission system with dispersion shifted fibres

摘要

It is proposed a method for processing optical signals to be transmitted through a succession of transmission lines spans made out of DSF and a system architecture allowing the implementation of such a method for compensating dispersion occurring at the transmission path without suffering too much from any cross-phase modulation. This is achieved by the use of a system architecture comprising a succession of transmission lines spans made out of dispersion shifted fibers DSF with in-between a stage made alternately by a single mode fiber SMF or a dispersion compensating fiber DCF. Both DSF and SMF have dispersion of same sign. In another embodiment of the system architecture, the used DSF and SMF have also both dispersion slope of same sign. In such a way, it is possible to limit the impact of the XPM by not compensating the dispersion and possibly the dispersion slope at each span.