深圳大学学报（理工版）Issue(2)：172-177,6.DOI:10.3724/SP.J.1249.2015.02172
基于矢量理论分束器设计方法及其机理的探讨
A method to design beam-splitters based on vectorial theory and discussion on its physical mechanism
摘要
Abstract
This paper analyses the principle and process to solve the diffraction efficiency of gratings with binary simple period structures by applying vectorial theory and explores a method to design a high-performance even-beam splitter. By programming, we obtain an even splitter with a binary structure in the Terahertz range. Thus, the zero-order diffraction is suppressed effectively, and it breaks the design limit of the traditional scalar theory. In addition, we discuss the physical mechanism of the method to suppress the zero-order diffraction by resolving the energy to the non-zero-order diffractions due to the resonance effect and the evanescent wave propagation effects.关键词
电磁波物理/亚波长/二元结构/偶数分束器/严格耦合波法/抑制零级衍射Key words
electromagnetic wave physics/subwavelength/binary structure/even beam splitter/rigorous couple-wave/zero-order diffraction suppress分类
信息技术与安全科学引用本文复制引用
黄海漩,徐平,阮双琛,杨拓,袁霞,黄燕燕..基于矢量理论分束器设计方法及其机理的探讨[J].深圳大学学报（理工版）,2015,(2):172-177,6.基金项目
国家自然科学基金资助项目(61275167)、深圳市基础研究计划资助项目(JCYJ20130329103020637) （61275167）
