XPM-induced intensity noise in WDM compensated transmission systems

A new linear model of the XPM-induced intensity noise is used for a fast evaluation of the system degradation at the end of several types of dispersion compensated transmission systems. We give the expression of a linear filter that accounts for the intensity/cross-phase/intensity conversion (IM/XPM/IM) at the end of any type of dispersion compensated system. This allows a fast computation of the XPM induced intensity noise at the receiver, without resorting to very long simulations, so that it becomes a very useful tool in the design of terrestrial long-haul wavelength division multiplexed (WDM) transmission systems.