论文标题
用于分析金属薄膜中的次波长孔阵列的扩展等效电路模型
An extended equivalent circuit model for analysis of arrays of sub-wavelength holes perforated in a metallic film
论文作者
论文摘要
近年来，由于多种应用（传感器，极化器，过滤器）以及在操纵撞击光的不同特征方面的独特能力，次波长孔的定期阵列已成为近年来许多研究的主题。本文提出了一种新的高精度电路模型，以研究这些结构的电磁响应，该响应提供了比可用文献更高的精度。为了开发模型，用于在光圈内采用多模式方法，并以三种通用形式介绍了所提出的模型。与提出的电路模型一起，提出了正方形和圆形孔的准确空间曲线，其中近似电场的横向成分。在本文中，可以表明，可以分析类似于其他孔径阵列的结构，例如PEC支柱阵列，并且电路模型可以准确预测这些结构的行为。在某些实际应用中，例如传感器和TCE（透明导电电极），将阵列嵌入到分层介质中，并且具有较小的变化和很少的修改的电路模型可以以高精度分析这些结构。
Periodic arrays of sub-wavelength holes, due to a variety of applications (sensors, polarizers, filters) and unique abilities in manipulating different characteristics of impinging light, have been the subject of many studies in recent years. This paper presents a new high-precision circuit model to investigate these structures' electromagnetic response, which provides higher accuracy than available literature. To develop the model, a multi-mode approach is taken for inside the apertures, and the proposed model is presented in three general forms which are explained in detail. Along with the proposed circuit model, accurate spatial profiles for square and circular apertures are presented in which the transverse components of the electric field are approximated. In this paper, it is shown that structures such as an array of PEC pillars can be analyzed similar to other arrays of apertures, and the circuit model accurately predicts the behavior of these structures. In some practical applications, such as sensors and TCEs (transparent conducting electrodes), the array is embedded in a layered medium, and the circuit model with minor changes and few modifications can analyze these structures with high accuracy.
