The formula for the time shift of a dispersion-managed soliton that results from its collision with other solitons in different channels consists of two terms, one related to the frequency shift during collision, and the other related to the residual frequency shift after collision. It is found that an optimal relative delay exists between pulses in adjacent channels after each dispersion-managed span that balances the contributions from the two terms and minimizes the overall time shift, leading to a substantial improvement in transmission performance.
© 2003 Optical Society of America
Xiang Liu, Xing Wei, Linn F. Mollenauer, Colin J. McKinstrie, and Chongjin Xie, "Collision-induced time shift of a dispersion-managed soliton and its minimization in wavelength-division-multiplexed transmission," Opt. Lett. 28, 1412-1414 (2003)