Disturbance of Soliton Pulse Propagation from Higher-Order Dispersive   Waveguides
  Optical soliton pulses offer many applications within optical communication systems, but by definition a soliton is only subjected to second-order anomalous group-velocity-dispersion; an understanding of higher-order dispersion is necessary for practical implementation of soliton pulses. A numerical model of a waveguide was developed using the Nonlinear Schrodinger Equation, with parameters set to ensure the input pulse energy would be equal to the fundamental soliton energy. Higher-order group-velocity-dispersion was gradually increased, for various temporal widths and waveguide dispersions. A minimum pulse duration of 100-fs was determined to be necessary for fundamental soliton pulse propagation in practical photonic crystal waveguides. 
Matthew Marko, Andrzej Veitia, Xiujian Li, Jiangjun Zheng, and Cheewei   Wong
physics.optics