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基于8字形散射体正方晶格光子晶体完全带隙特性研究

发表时间:2015-08-15  浏览量:1909  下载量:674
全部作者: 潘赛虎,徐权
作者单位: 常州大学信息科学与工程学院
摘 要: 提出一种基于旋转对称的8字形散射体二维正方晶格光子晶体。利用麻省理工学院(Massachusetts Institute of Technology,MIT)提供的开源仿真器(MPB)仿真分析了该结构光子晶体的结构参数对完全带隙特性的影响。研究发现,8字形散射体二维正方晶格光子晶体横向磁场模态(transverse magnetic,TM)存在较大完全带隙,为基于完全带隙特性设计的滤波器及全反射等提供应用基础;横向电场模态(transverse electric, TE)的完全带隙较小,能带特性更为复杂,为基于能带特性设计的负折射及自准直特性等提供应用基础。通过参数优化获得最大完全带隙宽度0.102 8ωa/2πc. 当32.3≤εr≤33.5时,存在6条完全带隙。
关 键 词: 光学;光子晶体,完全带隙,8字形,散射体
Title: Characteristic research on photonic band gaps square-lattice photonic crystals based on 8-shaped scatters
Author: PAN Saihu, XU Quan
Organization: School of Information Science & Engineering, Changzhou University
Abstract: A novel photonic crystal based on 8-shaped scatters with two-dimensional square-lattice is presented. By employing the MPB of Massachusetts Institute of Technology (MTT), the relationship between the structural parameters of the photonic crystals and the properties of photonic band gaps are investigated. The calculation results of 8-shaped scatters with two-dimensional square-lattice demonstrate that big complete band gap exists in transverse magnetic (TM) field mode, which provides application for the design of the filter and the total reflection based on the complete band gap characteristics. On the other hand, small complete band gap exists in transverse electric (TE) field mode with rather complicated energy band characteristics, which provides application for the design of negative refraction and self alignment characteristics based on energy band characteristics. By optimizing the structural parameters, the maximum absolute photonic band gaps of 0.102 8ωa/2πc is obtained and six absolute photonic band gaps are existed when 32.3≤εr≤33.5.
Key words: optics; photonic crystals; complete band gaps; 8-shaped; scatter
发表期数: 2015年8月第15期
引用格式: 潘赛虎,徐权. 基于8字形散射体正方晶格光子晶体完全带隙特性研究[J]. 中国科技论文在线精品论文,2015,8(15):1573-1580.
 
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