二维光子晶体禁带的MATLAB源码,光子晶体中因周期性结构而存在的频率禁带称为光子禁带，光子禁带的存在是光子晶体具有广泛应用前景的重要原因。 禁带越大，可控光的频带也越宽-Two-dimensional photonic crystal band gap of MATLAB source, photonic crystal structure exists because of the cyclical frequency band known as photonic band gap, pho