Abstract

In periodically amplified, wavelength-division multiplexed (WDM) soliton transmission systems, collisions between solitons in different channels result in permanent shifts of their central frequencies. The resulting effect is a timing jitter in the soliton arrival times, which limits the system performance. In this paper, we study the reduction of these frequency shifts by stepwise dispersion profiling of the transmission fibre. In particular, we use the analysis in Ref. [1] to calculate the residual frequency shifts due to two-step dispersion profiles as a function of collision position. We compare the performance of various two-step profiles, and identify a new, optimum profile for the reduction of collision-induced jitter in WDM soliton systems.

© 1996 Optical Society of America