Analysis Of Soliton Collisions In A Wavelength Division Multiplexed Dispersion Managed Soliton Transmission System
01 August 2002
Timing jitter induced by soliton collisions is the leading nonlinear penalty in a WDM dispersion managed soliton transmission system. Through analysis and numerical simulations, we show that consecutive complete collisions and partial collisions both produce permanent frequency shifts in the colliding soliton and cause approximately equal amounts of timing shifts. We further show that the worst-case maximum timing shift diverges logarithmically with the total number of WDM channels and linearly with the total transmission distance. However, the probability for such worst cases to occur decreases exponentially with channel spacing, total number of WDM channels and total transmission distance. We conclude that only the effects caused by adjacent channels need to be considered in a high channel count WDM system.