Energy variation of dispersion-managed solitons in amplified systems: a physical interpretation

Summary form only given. The advantages of dispersion management, which result mainly from the enhanced energy of the propagating pulse are well known. Although much of the theoretical work on dispersion-managed (DM) solitons has concentrated on the lossless model, some work has focused on the role of fiber loss. We investigate numerically, DM soliton propagation in a dispersion map constructed of two equal length sections, where the amplification period (Z/sub a/) equal to the dispersion management period (Z/sub d/). We show that the effective average dispersion (/spl beta/"/sub ave/) can be used to explain why the energy of the DM soliton changes as the amplifier occupies different positions within the dispersion map.