| A Pseudospectral Time—Domain Algorithm for Calculating the Band Structure of a Two—Dimensional Photonic Crystal |
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| 引用本文： | 何江平,沈林放,等.A Pseudospectral Time—Domain Algorithm for Calculating the Band Structure of a Two—Dimensional Photonic Crystal[J].中国物理快报,2002,19(4):507-510. |
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| 作者姓名： | 何江平 沈林放 |
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| 作者单位： | [1]CenterforOpticalandElectromagneticResearch,StateKeyLaboratoryforModernOpticalInstrumentation,ZhejiangUniversity,Hangzhou310027 [2]CenterforOpticalandElectromagneticResearch,StateKeyLaboratoryforModernOpt |
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| 摘 要： | A pseudospectral time-domain (PSTD) method is developed for calculating the band structure of a two-dimensional photonic crystal.Maxwell‘s equations are rewritten in terms of period fields by using the Bloch theorem.Instead of spatial finite differences,the fast Fourier transform is used to calculate the spatial derivatives.To reach a similar accuracy,fewer sample points are required in the present PSTD method as compared to the conventional finite-difference time-domain methods.Our numerical simulation shows that the present PSTD method is an efficient and accurate method for calculating the band structure of a photonic crystal.
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| 关 键 词： | 光学晶体 带结构计算 PSTD法 |
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