高阶色散对光脉冲传输的影响

When the optical pulse wavelength coincide with the zero-dispersion wavelength,the transmission characteristics of Gaussian optical pulses with or without chirp and super-Gaussian optical pulses with or without chirp in the single-mode optical fiber is studied numerically in this paper.The results show that the third-order dispersion can make the pulse inclining to one side,and the tail appears vibration.The peak intensity of super-Gaussian optical pulse undergoes a stage of rising,and then going down,and the tail experiences a process of strengthening,weakening,and then strengthening again,which are different from Gaussian optical pulse.The chirp causes the shape of optical pulse changing harder.