| 光子晶体缺陷腔品质因子的数值设计与优化 |
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| 引用本文： | 刘靖,孙军强,黄重庆,黄德修,吴铭. 光子晶体缺陷腔品质因子的数值设计与优化[J]. 半导体光电, 2007, 28(3): 391-394 |
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| 作者姓名： | 刘靖 孙军强 黄重庆 黄德修 吴铭 |
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| 作者单位： | 华中科技大学,武汉光电国家实验室,湖北,武汉,430074;湖南理工学院,物电系,湖南,岳阳,410006;华中科技大学,武汉光电国家实验室,湖北,武汉,430074;湖南理工学院,物电系,湖南,岳阳,410006 |
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| 基金项目： | 国家自然科学基金 , 湖南省教育厅科研项目 |
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| 摘 要： | 从品质因子的原始定义出发,得出了一种可编程的光子晶体缺陷腔品质因子的数值设计方案,基于三维时域有限差分法编写了该方案的计算软件,借助该模拟软件,计算了硅基二维四方晶体和三角晶体微腔的品质因子.结果表明,尽管四方晶体的带隙宽度比三角晶体窄,但能获得更高的品质因子,更有利于提高滤波分辨率和耦合效率.
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| 关 键 词： | 品质因子 缺陷腔 时域有限差分法 光子晶体 |
| 文章编号： | 1001-5868（2007）03-0391-04 |
| 修稿时间： | 2006-09-26 |
Numerical Design and Optimization of Quality Factor in Photonic Crystal Cavities |
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| LIU Jing,SUN Jun-qiang,HUANG Chong-qing,HUANG De-xiu,WU Ming. Numerical Design and Optimization of Quality Factor in Photonic Crystal Cavities[J]. Semiconductor Optoelectronics, 2007, 28(3): 391-394 |
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| Authors: | LIU Jing SUN Jun-qiang HUANG Chong-qing HUANG De-xiu WU Ming |
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| Affiliation: | 1. Wuhan National Lab. for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, CHN; 2. Department of Physics, Hunan Institute of Science and Technology, Yueyang 414006, CHN |
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| Abstract: | From the primitive definition of quality factor, a programmable design proposal for photon crystal defect cavities has been obtained, a software based on the three-dimensional finite-difference time-domain method was compiled, and with the aid of this simulation software, the micro cavity quality factors were numerically calculated for both square crystal and the triangle crystal. The calculated results demonstrate that the square crystal can obtain higher quality factor, though its band-gap width is narrower than that of triangle crystal, and it has more advantages to enhance the filter discrimination and coupling efficiency. |
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| Keywords: | quality factor cavities finite-difference time-domain method photonic crystal |
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