Collision-induced timing-jitter analysis in a wavelength-division-multiplexed optical soliton-transmission system with dispersion management

Collision-induced timing jitter is theoretically and numerically studied fo r two-channel wavelength-division-multiplexed optical soliton transmission systems with both weak and strong (practical) dispersion management. For a weakly managed case the timing jitter induced by the residual frequency shi ft strongly depends on bit rate per channel owing to the correlation in the relative time shift in neighboring pulses. We also discuss the effect of d ispersion management for reducing the timing jitter. For a strongly managed case the timing jitter is mainly induced either by the accumulated positio n shift or by an incomplete-collision-induced residual frequency shift. It becomes significant for nearly zero path-averaged dispersion. We optimize t he path-averaged dispersion of the line composed of 1.3-mum zero-dispersion single-mode fiber and its reversed dispersion fiber by minimizing the jitt er caused by both collision and amplifier noise. (C) 2001 Optical Society o f America.