【摘要】 提出一种新型各向异性材料 (碲 )二维光子晶体结构 ,应用有限时域差分法 ,对该结构特性进行数值分析 ,结果表明 :通过优化结构参量 ,该结构具有较大的绝对光子禁带 ,禁带宽度为0 .0 6 4ωe(ωe=2πc/a ,a为晶格常量 ,c为光速 ) ,且该光子晶体的带隙具有很好的稳定性 .更多还原

【Abstract】 A novel two-dimensional photonic crystal of anisotropic material Te is proposed. By using the FDTD method, the band gap of the structures is carefully studied. After optimizing the geometrical parameters, a large complete band gap of 0.064ω e(where ω e =2πc/a, a is the lattice constant, c is light velocity) is found. Our numerical analysis also shows that the complete band gap of the structure is quite stable under the perturbation of these structural parameters.更多还原