| 准分形结构光子晶体的滤波特性 |
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| 引用本文： | 李文胜,付艳华,张琴,是度芳.准分形结构光子晶体的滤波特性[J].半导体光电,2010,31(5). |
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| 作者姓名： | 李文胜 付艳华 张琴 是度芳 |
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| 作者单位： | 湖北汽车工业学院理学系,湖北十堰,442002;湖北汽车工业学院理学系,湖北十堰,442002;华中科技大学物理系,武汉,430074 |
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| 摘 要： | 在考虑色散关系的基础上,利用传输矩阵法讨论了由LiF和Si组成的一维准分形结构光子晶体的透射模特征.结果表明:该准分形光子晶体的透射模半峰全宽度极窄,两介质层的几何厚度分别增加时,透射模中心波长红移,反之中心波长蓝移;且中心波长的移动量和介质几何厚度的增量间有线性关系.当介质保持基本厚度不变而入射角θ≤5°时,透射模中心不变,透射率有少许下降;θ较大时,透射模中心波长蓝移,透射率变小,入射角越大,透射率下降得越多.蓝移量也越大,且这两种变化量与入射角增量间呈非线性关系.上述结论对于准分形光子晶体滤波器的实验研究具有一定的参考价值.
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| 关 键 词： | 光子晶体 传输矩阵 准分形 色散 透射模 滤波 |
Filtering Characteristics of Quasi-fractal Photonic Crystal |
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| LI Wensheng,FU Yanhua,ZHANG Qin,SHI Dufang.Filtering Characteristics of Quasi-fractal Photonic Crystal[J].Semiconductor Optoelectronics,2010,31(5). |
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| Authors: | LI Wensheng FU Yanhua ZHANG Qin SHI Dufang |
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| Affiliation: | LI Wensheng1,FU Yanhua1,ZHANG Qin1,SHI Dufang1,2 (1.Department of Basic Science,Hubei Automotive Industries Institute,Shiyan 442002,CHN,2.Department of Physics,Huazhong Unversity of Science and Technology,Wuhan 430074,CHN) |
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| Abstract: | Based on considering the dispersion relations,the characteristics of the transmission mode of quasi-fractal photonic crystal composed of LiF and Si were calculated by transfer matrix method.The results show that the full peak half width of transmission mode of the quasi-fractal photonic crystal is very narrow,and if the geometric thickness of the two dielectric layers increases respectively,the central wavelength of transmission mode will redshift,vice versa;and there is a linear relationship between the mo... |
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| Keywords: | photonic crystal transfer matrix quasi-fractal dispersion transmission mode filtering |
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