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首页> 外文期刊>Photonics and Nanostructures: Fundamentals and Applications >Mode analysis of 2D photonic quasicrystals based on an approximate analytic model
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Mode analysis of 2D photonic quasicrystals based on an approximate analytic model

机译：基于近似解析模型的二维光子准晶体的模式分析

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In this work, we have developed a semi-analytical model based on perturbation theory for evaluating optical properties of photonic quasicrystals. Although numerical techniques are being used for determining characteristics of photonic quasicrystals, it is believed that analytical studies based on approximations help us to understand the physical properties and treatment of the structure more easily. Towards that end, the use of perturbation method can be beneficial in approximating the photonic band structure and mode profile in photonic quasicrystals made of low dielectric contrast materials with high accuracy. It is shown that error incurred by the approximation through the perturbation method can be estimated to be a few percent, in comparison to the more accurate finite difference time domain method. In addition, the effect of variation in the dielectric contrast on the photonic band structure of 2D 12-fold photonic quasicrystal has been studied and it is presented that by decreasing dielectric contrast a smaller photonic band gap is obtained, which is interesting for optical communication devices.
机译：在这项工作中，我们已经建立了一个基于微扰理论的半解析模型，用于评估光子准晶体的光学特性。尽管使用数值技术来确定光子准晶体的特性，但据信基于近似的分析研究有助于我们更轻松地了解物理性质和结构处理。为此，使用摄动方法可以有利地以高精度逼近由低介电对比材料制成的光子准晶体中的光子带结构和模式分布。结果表明，与更精确的时差有限差分法相比，通过摄动法进行逼近所产生的误差可以估计为百分之几。此外，研究了介电对比度变化对2D 12倍光子准晶体的光子能带结构的影响，并提出通过降低介电对比度可以获得较小的光子带隙，这对于光通信设备来说是有趣的。

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