Influence of higher-order dispersion on optical pulse propagates along single-mode

The analytic expression is derived by taking into account the third-order dispersion as an initial chirped Gaussian optical pulse propagates along the single-mode. Influence of the pulse shape on dispersion parameter and width of pulse is discussed. The analytic expression is calculated by using MATLAB mathematic software. The results show that the third-order dispersion generates distortion to the pulse shape with an oscillatory structure at one of pulse edges. The bigger the numeric of third-order dispersion is, the more serious the pulse shape distorts. The higher the input frequency is, the longer the trail of pulse is in the same third-order dispersion. The trail of pulse depends not only on third-order dispersion, but also on transmission rate.