Influence of higher-order dispersion on super-Gaussian optical pulse in the single-mode optical fiber

Based on the nonlinear Schrdinger equation used to describe the normalized amplitude evolution in the fiber,the influence of the third-order dispersion on the transmission characteristics of super-Gaussian optical pulse with different chirps in the fiber is studied numerically.The results show that the peak intensity of super-Gaussian optical pulse becomes higher at the beginning,and the tail experiences a process of strengthening,and then weakening,which are different from Gaussian optical pulse.The results also show that the initial chirps will strengthen the influence of the third-order dispersion,so the method to compensate the influence of dispersion by adjusting the initial chirps should be used carefully in the case that the influence of the third-order dispersion can't be ignored.