Many applications of photonic crystals are based on photonic band gaps, and it would thus be very interesting to design a photonic crystal with the largest band gap for a given dielectric contrast.
光子晶体最主要的特性是光子禁带：大多数光子晶体的应用都是基于禁带效应，因此设计具有尽可能大的禁带的光子晶体具有重要的意义。
The photonic band gap (PBG) property of a one-dimensional photonic crystal with a defect layer under pressure is studied, accordingly an improved model of pressure sensor is described.
通过研究带缺陷的一维光子晶体受压力后光带隙性能的变化，提出了改进型光子晶体压力传感器的理论模型。
A photonic crystal slab has an optimal thickness, which makes the photonic band gap maximum.
平板光子晶体存在一个最佳厚度，使其导模带隙最大。
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