Analysis on Super-Gaussin Pulse Propagation in the Zero Dispersion Region
超高斯型光脉冲在零色散区传输特性的研究

Based on the non-linear Schrdinger equation which suits the optical soliton propagation，by using the symmetry split-step Fourier transformation， the transmission evolution of super-Gaussin pulse in the zero dispersion region was simulated and the effect of attenuation, high order chromatic dispersion, high order non-linearity and initial chirp on propagation was analyzed. Some conclusions were obtained: attenuation has a great effect on the pulse amplitude but little on the shape of the pulse. The amplitude and pulse width of basic soliton pulse are always at the same standard when the pulse transmitted a certain distance, which is the ideal media for optical communication. As for the high order soliton pulse, it is changing all the time. When all the influence factors come to work together, it has a great effect on the pulse propagation. However, selecting a reasonable combination of these factors, it is possible to get a high order soliton pulse to transmit information. This result has certain amount of valuable reference significance on the study of improving the relay distance between two optical repeaters by strengthening the input power of pulse.