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利用多重散射方法计算并研究了二维光子晶体随着无序度变化的光子局域化.通过控制方形单元随机旋转角度以控制光子晶体的无序度.研究发现,随着无序度的增加光子通带的透过率逐渐降低,而光子禁带中的透过率逐渐上升,即无序导致的局域化逐渐由光子带边向光子禁带中心和光子通带的中心扩展.而且光子通带中的平均透过率随无序度的增加呈e指数下降.
The multi-scattering method was used to calculate and study the photon localization of two-dimensional photonic crystals with different degree of disorder. By controlling the random rotation angle of square elements to control the disorder degree of photonic crystals, it was found that with the increase of disorder degree The transmissivity of the photon passband gradually decreases, while the transmissivity in the photon band gap gradually increases, ie, the localization caused by the disorder gradually expands from the photon band edge to the center of the photon band gap and the photon passband, and photons The average transmittance in the passband decreases with the exponential decrease as the degree of disorder increases.