Super-Gaussian solitons in optical fibers

The variational principle is employed to obtain the evolution of the parameters of a super-Gaussian chirped soliton that propagates through an optical fiber and is governed by the dispersion-managed nonlinear Schrodinger's equation. These pulses have better features compared to a classical soliton and reduced timing jitter due to the Gordon-Haus effect. The waveform deviates from that of a classical soliton. The periodically-changing strong chirp of such a soliton reduces the effective nonlinearity that is necessary for balancing the local dispersion. This study is extended to obtain the adiabatic evolution of the parameters of such a soliton in the presence of perturbation terms.