"Magic" dispersion maps for multichannel soliton transmission

Using asymptotic theory and a momentum method, we have identified a family of dispersion management schemes that are advantageous for massive multicha nnel soliton transmission. For the practical case of two-step dispersion ma ps, special schemes are found that have optimal launch point locations (whe re no pulse prechirping is needed) that are independent of the fiber's disp ersion. Despite the variation of dispersion with respect to carrier wavelen gth due to the fiber's dispersion slope, the transmission in several differ ent channels can be optimized simultaneously using the same optimal launch point. Theoretical predictions are verified by direct numerical simulations .