光学学报, 2009, 29 (s1): 193, 网络出版: 2009-06-25
含空气缺陷层的单负材料一维光子晶体特性研究
Air Defect in One-Dimensional Photonic Crystal Heterostructures with Single-Negative Materials
光子晶体 单负材料 缺陷模 滤波器 传输矩阵法 photonic crystals single negative materials defect mode filter transfer matrix method
摘要
采用传输矩阵法系统研究了含空气缺陷层的单负材料一维光子晶体光学特性。发现在禁带中出现的透射峰随着缺陷层厚度的增加向低频方向移动, 这与传统正折射率材料构成的结构类似。但是, 该透射峰位置并不能用传统的有效介质理论来确定。而且, 透射峰的频率位置几乎不受入射角度和平面波的偏振状态的影响, 表明该透射峰的形成并不是由于布拉格效应, 而应归因于单负折射率材料的相位消除效应。因此, 含空气缺陷层的单负材料光子晶体, 其缺陷峰的性质具有与传统缺陷结构和纯粹单负材料缺陷结构不同的性质, 利用这些特性可以设计一种全角、可调的光子晶体滤波器。
Abstract
By using the transfer matrix method, the defect modes of one-dimensional photonic crystals composed of single-negative materials are investigated. The transmission peaks in band gaps shift to the low-frequency side with the increase of the layer thickness of the air defect layer, which accords with the properties of the photonic crystals composed of traditional positive materials. However, the position of the peak is found to be insensitive to the incident angle as well as polarization of the incident light, which implies the formation of the peak cannot be contributed to the Bragg effect, but the phase elimination effect. The results show that the structure is different from the structures composed of pure positive or negative materials. These properties of the structure show the potential application of omnidirectional tunable photonic filters.
张亚军, 韩鹏, 林超. 含空气缺陷层的单负材料一维光子晶体特性研究[J]. 光学学报, 2009, 29(s1): 193. Zhang Yajun, Han Peng, Lin Chao. Air Defect in One-Dimensional Photonic Crystal Heterostructures with Single-Negative Materials[J]. Acta Optica Sinica, 2009, 29(s1): 193.