Reduction of Collision-Induced Timing Jitter in Dense WDM by the Use of Periodic Group Delay Dispersion Compensators

We show how replacement of a modest fraction of the usual fiber-based dispersion compensation with a periodic-group-delay dispersion compensating module (PGD-DCM) can result in a drastic reduction in collision-induced timing jitter in dense WDM with dispersion-managed solitons. The principal mechanism here is a correspondingly large reduction in the net path over which a pair of colliding pulses interact.