By the numerical simulation

the influences of higher order effects

such as dispersion

self-steepening and self-frequency effects

on the compressed soliton pulse produced by the cascade compression system are studied.It is found that the higher-order nonlinear effects badly influence the transmission of the compressed soliton pulse.The three-order dispersion effect can lead to the deformation of the compressed soliton pulse due to occurrence of anti-symmetrical disturbance

while the self-steepening and the self-frequency effects result in the split of the compressed soliton pulse

and eventually distort the profile of the pulse.The results show that when pulse is compressed to picosecond or femtosecond regime

the deformation of the compressed soliton pulse occurs

which is a disadvantage for the propagation of the signal in optical soliton communication.