通过数值分析得到每段光纤的抽运光和激光衍双包层的分布，再通过坐标反变换对应到该段在整个光纤的位置(Through numerical analysis, the distributions of pumping light and laser diffraction double cladding are obtained, and then the position of the segment in the whole fiber is obtained by Inverse Coordin

在光纤通讯仿真中，产生QPSK，16QAM，64QAM信号，并添加激光相位噪声和自发辐射噪声(In optical fiber communication simulation, QPSK, 16QAM, 64QAM signals are generated, and laser phase noise and spontaneous radiation noise are added.)

本模拟是采用分步傅里叶的解，求光孤子在光线内传输过程数值求解薛定谔方程。方程是激光器在光纤中传输的过程。(In this simulation, the fractional Fourier solution is used to solve the Schrodinger equation. The equation is the process of laser transmission in fiber.)