| 二维介质柱型graphite格子光子晶体禁带特性 |
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| 引用本文： | 杨毅彪,王云才,王拴锋,王伟军,梁伟.二维介质柱型graphite格子光子晶体禁带特性[J].深圳大学学报(理工版),2010,27(2). |
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| 作者姓名： | 杨毅彪 王云才 王拴锋 王伟军 梁伟 |
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| 作者单位： | 1. 太原理工大学理学院,太原,030024
2. 太原理工大学材料科学与工程学院,太原,030024 |
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| 基金项目： | 山西省国际科技合作基金 |
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| 摘 要： | 采用平面波展开法模拟由GaAs、Si和Ge介质柱构造的graphite格子二维光子晶体的禁带结构.数值计算发现,无论由圆形、正六边形或正方形介质柱构造的graphite格子,出现完全光子禁带时对应的填充比f可变化范围都非常大.Graphite格子光子晶体在介质折射率最低为2.2时出现完全光子禁带.当介质材料折射率n在3.4~3.9范围变化时,最大禁带宽度Δ可保持在0.050ωa/(2πc)]以上,最大完全禁带宽度与中心频率的比值稳定在15%.
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| 关 键 词： | 光子晶体 光学 禁带特性 平面波展开法 graphite格子 |
The bandgap characteristics of two dimensional graphite lattice photonic crystals with dielectric rods |
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| YANG Yi-biao,WANG Yun-cai,WANG Shuan-feng,WANG Wei-jun,LIANG Wei.The bandgap characteristics of two dimensional graphite lattice photonic crystals with dielectric rods[J].Journal of Shenzhen University(Science &engineering),2010,27(2). |
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| Authors: | YANG Yi-biao WANG Yun-cai WANG Shuan-feng WANG Wei-jun LIANG Wei |
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| Abstract: | The photonic bandgaps of two dimensional photonic crystals with graphite lattice were simulated using the plane wave expansion method. Our simulation results show that the complete bandgaps appear when filling fraction f changes in a wide range and when the dielectric rods are circular, hexagonal or square. The complete photonic band gap is observed when the refractive index is more than 2.2. The obtained maximum complete photonic band gap is over 0.050［ωa/（2πc）］ and the complete band gap width to midgap frequency is about 15% when the refractive index of dielectric materials change within the range 3.4～3.9. |
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| Keywords: | photonic crystals optics bandgap characteristics plane wave expansion method graphite lattice |
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