用于计算多层膜结构中的SPP色散关系程序-SPP dispersion relation for calculating the multilayer film structure program

计算一维光子晶体缺陷态，以及完美一维光子晶体的能带结构-For one dimensional photonic crystal, this code can calculate the dispersion relation and reflection spetctra

光子晶体，根据色散关系公式计算等频线结构。简单实用方便有效，美观。(The photonic crystal is calculated according to the formula of dispersion relation. Simple, practical, convenient, effective and beautiful.)