中文说明：本软件使用matlab预言编写，用于分析光子晶体光纤空气孔直径，孔间距，等参数对光子晶体光纤单模特性的影响。
English Description：
This software is written by MATLAB prediction, which is used to analyze the influence of air hole diameter, hole spacing and other parameters on the single-mode characteristics of photonic crystal fiber.