利用平面波展开法研究了两种结构的光子晶体(PC)在旋转操作情况下的带隙特性.构建了两种结构不同的光子晶体,并比较了这两种光子晶体结构带隙特性的不同.分别讨论了旋转操作对两种结构光子晶体TE模式带隙特性的影响,发现TE模式的带隙受到介质在x-z平面分布情况的影响.根据计算的结果,分析了旋转操作对带隙特性产生影响的原因,并给出了最优化带隙的角度范围.本研究对实验上制作性能优良的光子晶体结构具有较好的理论指导意义.
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