一维光子晶体的禁带特性

Band Gap Properties of 1-D Photonic Crystal

利用传输矩阵法计算并分析了垂直入射下光子晶体的禁带特性.给出一个实际需要的禁带范围设计方法.通过调节两个介质折射率和厚度可控制禁带范围,并探讨了当两种介质的光学厚度均为1/4中心波长时,光子晶体透射谱与中心波长、两种介质折射率比值等的变化规律.

Using transfer matrix method, we calculated and analyzed the relationships between 1-D photonic crystal transmission spectrum and each of center wavelength and the ratio of the refractive indices of two dielectric materials of 1-D photonic crystal when the incidence angle was zero and the optical thicknesses of two dielectric materials were λo/4, where λo is center wavelength. We also gained a method for calculating optical thicknesses and refractive indices of two mediums of 1-D photonic crystal when the band gap range of vertical incident light is certain.