根据介质的光弹效应,采用有限元法对二维光子晶体的能带特性进行分析.给二维光子晶体施加应力时,由于构成二维光子晶体介质的光弹效应,引起介质的折射率变化,使得光子晶体的能带结构发生变化.详细分析了外加应力变化对基于Si/SiO2二维光子晶体能带结构特性的影响,结果表明,禁带的起始波长、截止波长及禁带宽度的变化量与外加应力呈线性关系.
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