| 含负折射率缺陷的一维光子晶体的杂质带 |
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| 引用本文： | 安丽萍,刘念华.含负折射率缺陷的一维光子晶体的杂质带[J].光子学报,2009,38(2):289-292. |
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| 作者姓名： | 安丽萍 刘念华 |
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| 作者单位： | 1. 燕山大学,物理系,河北,秦皇岛,066004;南昌大学,物理系,南昌,330047
2. 南昌大学,物理系,南昌,330047 |
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| 基金项目： | 燕山大学科技发展基金(YDJJ200534)资助 |
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| 摘 要： | 利用传输矩阵方法研究了含负折射率缺陷的一维光子晶体的透射谱.以19个周期的1/4波堆存在3个负折射率缺陷的光子晶体为例进行了数值计算.结果表明:如果改变缺陷的折射率,缺陷模之间的耦合作用将发生改变,带隙中形成的杂质带也随之改变; 当这个折射率取适当值时,在禁带中出现多个尖锐的透射峰,与正折射率缺陷构成的杂质带不同.
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| 关 键 词： | 光子晶体 负折射率缺陷 杂质带 滤波 |
| 收稿时间： | 2007-09-26 |
| 修稿时间： | 2007-11-28 |
Impurity Band in One-dimensional Photonic Crystal Containing Defect Layers with Negative Refractive Index |
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| AN Li-ping,LIU Nian-hua.Impurity Band in One-dimensional Photonic Crystal Containing Defect Layers with Negative Refractive Index[J].Acta Photonica Sinica,2009,38(2):289-292. |
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| Authors: | AN Li-ping LIU Nian-hua |
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| Institution: | 1 Department of Physics;Yanshan University;Qinhuangdao;Hebei 066004;China;2 Department of Physics;Nanchang University;Nanchang 330047;China |
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| Abstract: | The transmission through one-dimensional photonic crystal with negative refractive index defects was studied by using transfer matrix method.Quarter-wave stack photonic crystal of 19 periods with three negative refractive index defects were taken as an example for numerical calculation.It is found that when the refractive index of defect was changed,the coupling effect between the defect modes was varied,which results in the change of the impurity band.Some sharp transmission peaks apper in the forbidden band when the refractive index of defects is appropriate.It is different from the the impurity band formed by positive refractive index defects. |
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| Keywords: | Photonic crystal Negative refractive index defect Impurity band Filter |
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