结构参数对二维光子晶体波导慢光特性的影响

doi:10.13190/jbupt.201005.7.luh

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (5): 7-10.doi: 10.13190/jbupt.201005.7.luh

结构参数对二维光子晶体波导慢光特性的影响

鲁辉,田慧平,纪越峰

北京邮电大学信息与通信工程学院

收稿日期:2010-01-05 修回日期:2010-01-06 出版日期:2010-08-28 发布日期:2010-06-15
通讯作者: 鲁辉 E-mail:yihui18@126.com
基金资助:
国家自然科学基金项目（60707001）；国家重点基础研究发展计划项目（2007CB310705）；国家高技术研究发展计划项目(2009AA01Z214)；教育部新世纪优秀人才支持计划项目(NCET070110)

Effects on the Slow Light Properties of 2D Photonic Crystal Waveguide with the Change of the Structure Parameters

Received:2010-01-05 Revised:2010-01-06 Online:2010-08-28 Published:2010-06-15

摘要/Abstract

摘要：

为了设计具有更好慢光特性的光子晶体结构，分析了结构参数对光子晶体线缺陷波导结构慢光特性的影响. 通过改变缺陷柱的位置和大小，用平面波展开法(PWE)分析了导模频率和群速度及色散. 分析结果表明，缺陷柱的大小和介电常数的变化对导模的慢光值影响更大，而缺陷柱位置的变化则能优化慢光的群速度色散特性. 根据结论，通过对波导结构进行针对性调整，可得到具有更好慢光特性的新型光子晶体结构.

关键词: 光子晶体, 线缺陷波导, 导模, 慢光, 群速度色散

Abstract:

Effects on the slow light properties of the photonic crystal linedefect waveguide are researched for designing photonic crystal structure with excellent slow light properties. Through changing the position and the size of the defected rods, the frequency and group velocity of the guided mode and the group velocity dispersion are analyzed with planewave expansion (PWE) method. Analysis indicates that the group velocity of the slow light is mainly affected by the radii and dielectric constant of the defected rods, and the group velocity dispersion is decided by the change of the defected rods’ location. The photonic crystal structures with excellent slow light properties can be achieved through designing the waveguide based on the conclusion.

Key words: photonic crystal, linedefect waveguide, guided mode, slow light, group velocity dispersion

鲁辉,田慧平,纪越峰. 结构参数对二维光子晶体波导慢光特性的影响[J]. 北京邮电大学学报, 2010, 33(5): 7-10.

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结构参数对二维光子晶体波导慢光特性的影响

Effects on the Slow Light Properties of 2D Photonic Crystal Waveguide with the Change of the Structure Parameters

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