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2007•Acta Physica SinicaOpen access

Optimal design based on a two-dimensional photonic crystal of hexagonal lattice with a large complete band gap

物理学报

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Abstract

摘要 根据平面波展开法对二维光子晶体的能带结构进行计算，采用栅格结构连接电介质圆柱体对六角结构的二维光子晶体进行了优化. 通过计算栅格宽度和圆柱体半径对绝对带隙的影响，找到了一组可以获得大带隙二维光子晶体结构的最佳参数.优化后的光子晶体的大带隙对光子晶体制造工艺中介质圆柱体半径的偏离具有很好的稳定性，因此该结构的二维光子晶体具有很高的实用性. 关键词: 光子晶体 / 绝对带隙 / 六角结构 Abstract Using the plane wave expansion method, a kind of two-dimensional photonic crystal with a hexagonal lattice of GaAs columns in air is optimized by connecting the dielectric rods with veins of proper width. The optimal parameters are calculated in order to obtain the largest complete band gap. The width of the complete band gap is insensitive to the radius of dielectric columns, so this kind of two-dimensional photonic crystal is of great practicability. Keywords: photonic crystal / complete band gap / hexagonal lattice 作者及机构信息 钟 凯, 张会云, 张玉萍, 李喜福, 王 鹏, 姚建铨 基金项目: 国家重点基础研究发展规划(批准号：2007CB310403)和天津市自然科学基金(批准号：07JCYBJC06200)资助的课题. Authors and contacts 参考文献 施引文献

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摘要 根据平面波展开法对二维光子晶体的能带结构进行计算，采用栅格结构连接电介质圆柱体对六角结构的二维光子晶体进行了优化. 通过计算栅格宽度和圆柱体半径对绝对带隙的影响，找到了一组可以获得大带隙二维光子晶体结构的最佳参数.优化后的光子晶体的大带隙对光子晶体制造工艺中介质圆柱体半径的偏离具有很好的稳定性，因此该结构的二维光子晶体具有很高的实用性. 关键词: 光子晶体 / 绝对带隙 / 六角结构 Abstract Using the plane wave expansion method, a kind of two-dimensional photonic crystal with a hexagonal lattice of GaAs columns in air is optimized by connecting the dielectric rods with veins of proper width. The optimal parameters are calculated in order to obtain the largest complete band gap. The width of the complete band gap is insensitive to the radius of dielectric columns, so this kind of two-dimensional photonic crystal is of great practicability. Keywords: photonic crystal / complete band gap / hexagonal lattice 作者及机构信息 钟 凯, 张会云, 张玉萍, 李喜福, 王 鹏, 姚建铨 基金项目: 国家重点基础研究发展规划(批准号：2007CB310403)和天津市自然科学基金(批准号：07JCYBJC06200)资助的课题. Authors and contacts 参考文献 施引文献

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Available abstract

摘要 根据平面波展开法对二维光子晶体的能带结构进行计算，采用栅格结构连接电介质圆柱体对六角结构的二维光子晶体进行了优化. 通过计算栅格宽度和圆柱体半径对绝对带隙的影响，找到了一组可以获得大带隙二维光子晶体结构的最佳参数.优化后的光子晶体的大带隙对光子晶体制造工艺中介质圆柱体半径的偏离具有很好的稳定性，因此该结构的二维光子晶体具有很高的实用性. 关键词: 光子晶体 / 绝对带隙 / 六角结构 Abstract Using the plane wave expansion method, a kind of two-dimensional photonic crystal with a hexagonal lattice of GaAs columns in air is optimized by connecting the dielectric rods with veins of proper width. The optimal parameters are calculated in order to obtain the largest complete band gap. The width of the complete band gap is insensitive to the radius of dielectric columns, so this kind of two-dimensional photonic crystal is of great practicability. Keywords: photonic crystal / complete band gap / hexagonal lattice 作者及机构信息 钟 凯, 张会云, 张玉萍, 李喜福, 王 鹏, 姚建铨 基金项目: 国家重点基础研究发展规划(批准号：2007CB310403)和天津市自然科学基金(批准号：07JCYBJC06200)资助的课题. Authors and contacts 参考文献 施引文献

Key concepts: Photonic crystal, Plane wave expansion, Hexagonal lattice, Plane wave expansion method, Band gap, Hexagonal crystal system, Materials science, Rod

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