| 二维光子晶体透射特性的FDTD数值研究 |
| |
| 引用本文： | 汤炳书,沈廷根. 二维光子晶体透射特性的FDTD数值研究[J]. 半导体光电, 2006, 27(1): 45-48 |
| |
| 作者姓名： | 汤炳书 沈廷根 |
| |
| 作者单位： | 1. 连云港师范高等专科学校,物理系,江苏,连云港,222006
2. 江苏大学,物理系,江苏,镇江,212003 |
| |
| 摘 要： | 把时域有限差分方法(FDTD)用于二维光子晶体透射特性研究,计算后得到多种情况下二维光子晶体的透射系数与入射光频率的关系曲线,结果表明,禁带的宽度和位置与组成二维光子晶体的晶格结构和介电常数等因素有关,介质柱半径变大则禁带变宽且禁带的中心频率变大,介质柱的介电常数与本底材料的介电常数相差越显著越有利于形成禁带,降低结构的对称性,禁带宽度增大.
|
| 关 键 词： | 二维光子晶体 时域有限差分法 透射系数 禁带 二维光子晶体 透射特性 FDTD 数值研究 Photonic Crystal Properties Transmission Analysis 禁带宽度 对称性 晶格结构 材料 中心频率 半径 介质柱 因素 介电常数 组成 位置 结果 |
| 文章编号： | 1001-5868(2006)01-0045-04 |
| 收稿时间： | 2005-06-24 |
| 修稿时间： | 2005-06-24 |
Numerical Analysis on Transmission Properties of Two-dimensional Photonic Crystal Using FDTD |
| |
| TANG Bing-shu,SHEN Tin-gen. Numerical Analysis on Transmission Properties of Two-dimensional Photonic Crystal Using FDTD[J]. Semiconductor Optoelectronics, 2006, 27(1): 45-48 |
| |
| Authors: | TANG Bing-shu SHEN Tin-gen |
| |
| Abstract: | transmission coefficient versus frequency of the incident wave for two-dimensional photonic crystal is investigated by using finite difference time domain(FDTD) method.The calculated results obviously show that band gap width and positions are related to lattice structure and dielectric constant of two-dimensional photonic crystal.With the increase of the radius of crystal cylinder,the band gap is widened and the central frequency is enhanced.The large differences between the dielectric constants of the cylinders and the background materials are useful to form the band gap,to reduce the structure symmetry and to widen the band gap,etc. |
| |
| Keywords: | two-dimensional photonic crystals finite difference time domain method transmission coefficient band gap |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
