Customizing longitudinal electric field profiles using spatial dispersion in dielectric wire arrays.
Customizing longitudinal electric field profiles using spatial dispersion in dielectric wire arrays.
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DOI：
10.1364/oe.26.002478
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发表时间：
2018-01
期刊：
影响因子：
3.8
通讯作者：
Taylor Boyd;J. Gratus;P. Kinsler;R. Letizia
中科院分区：
文献类型：
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作者：
Taylor Boyd;J. Gratus;P. Kinsler;R. Letizia
我们展示了如何空间色散可以被用来作为一种机制，定制调制线介质内的电场的纵向剖面，使用一个快速和非常准确的一维非均匀模型。这种定制提供了精细的控制的子波长行为的字段，最近已经实现了横向领域在更简单的开槽板介质。我们的计划避免了任何必要的运行一长串的计算密集型的特定结构的3D模拟，以迭代收敛（或蛮力搜索）的经验“最佳性能”的设计，根据一个抽象的数字的优点。相反，如果提供一个“理想波形”的轮廓，我们现在可以计算如何直接构建它。值得注意的是，与大多数光子晶体结构的工作，我们的重点是专门的字段配置文件，因为它们的潜在效用，而不是其他问题，如带隙控制，和/或传输和反射系数。
We show how spatial dispersion can be used as a mechanism to customize the longitudinal profiles of electric fields inside modulated wire media, using a fast and remarkably accurate 1D inhomogeneous model. This customization gives fine control of the sub-wavelength behaviour of the field, as has been achieved recently for transverse fields in simpler slotted-slab media. Our scheme avoids any necessity to run a long series of computationally intensive 3D simulations of specific structures, in order to iteratively converge (or brute-force search) to an empirical 'best-performance' design according to an abstract figure-of-merit. Instead, if supplied with an 'ideal waveform' profile, we could now calculate how to construct it directly. Notably, and unlike most work on photonic crystal structures, our focus is specifically on the field profiles because of their potential utility, rather than other issues such as band-gap control, and/or transmission and reflection coefficients.