| Band Structure of a two—Dimensional Photonic Crystal with a Triangular Lattice of Anisotropic Elliptic Cylinders |
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| 引用本文： | 庄飞,何赛灵,等.Band Structure of a two—Dimensional Photonic Crystal with a Triangular Lattice of Anisotropic Elliptic Cylinders[J].中国物理快报,2002,19(1):73-75. |
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| 作者姓名： | 庄飞 何赛灵 |
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| 作者单位： | [1]CentreforOpticalandElectromagneticResearch,StateKeyLaboratoryforModernOpticalInstrumentation,ZhejiangUniversity,Hangzhou310027 [2]CentreforOpticalandElectromagneticResearch,StateKeyLaboratoryforModernOpt |
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| 摘 要： | The plane-wave expansion method is used to calculate the band structure of a two-dimensional photonic crystal formed by a triangular lattice of anisotropic elliptic cylinders.After optimizing the parameters of the elliptic cylinders,we find a large bandgap (about 0.0449 ωe,ωe=2πc/α) at high frequencies beside a coexisting large absolute gap(about 0.035ωe) at low frequencies.Numerical results show that the optimal design is very stable under any parameter perturbation.
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| 关 键 词： | 二维光晶体 三角晶格 带结构 |
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