matlab simulation for 2D photonic crystals

this matlab code implements 2D RCWA .

严格耦合波计算麦克斯韦方程数值解的源代码，可以进行周期性的结构的数值求解，可以对2维所有类光栅结构进行求解。(Rigorous coupling wave is used to calculate the source code of the numerical solution of Maxwell equation, which can be used for numerical solution of periodic struc