一维三元光子晶体的吸收特性  

Absorbtion characteristic of one-dimensional ternary photonie crystal

作　　者：席锋[1] 

机构地区：[1]重庆工商大学计算机科学与信息工程学院,重庆400067

出　　处：《重庆工商大学学报（自然科学版）》2008年第4期358-361,共4页Journal of Chongqing Technology and Business University:Natural Science Edition

摘　　要：利用特征矩阵描述了光波在三元光子晶体中的传播,得出了光子晶体的能带特性,即:反射波和透射波中均出现光子禁带。在光子晶体材料介质中考虑吸收,分析了吸收对光子晶体能带的影响,发现随着吸收系数的增大,禁带反射率逐渐减小,一级禁带向二级禁带的过渡变得平缓;同时,禁带透射率迅速降低,禁带宽度逐渐增大,边缘变得模糊直到消失,且吸收系数对透射率的影响较反射率的影响要大。Using the transfer matrix to calculate the transmission of the light photonic bandgaps are displayed in reflective wave and transmitted wave. Leading wave in photonic crystal, the into the absorbtion refractive index, the photonic bandgap of photonic crystal with the variety of the absorbtion is studied. The result shows that with the absorbtion coefficient increased, the reflectivity of forbidden band lowers gradually. At last, there＇ s no obvious photonic bandgap. In the transmitted wave, the width of photonic bandgap is a gradual extension, at the same time, the edge of photonic bandgap is weakened quickly.

关 键 词：光子晶体 光子能带 吸收系数 反射率 

分 类 号：O471.1[理学—半导体物理]