Optimal design of sub-wavelength metal rectangular gratings for polarizing beam splitter based on effective medium theory

作     者：赵华君 彭拥军 谭菊 廖长荣 李鹏 任晓霞 

作者机构：Department of Electronic and Electrical EngineeringChongqing University of Arts and Sciences 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2009年第18卷第12期

页      面：5326-5330页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Project supported by Science Foundation of the Chongqing Committee of Education China (Grant No KJ071205) 

主　　题：polarizing beam splitter sub-wavelength metal rectangular gratings effective medium theory antireflection 

摘      要：A novel optimal design of sub-wavelength metal rectangular gratings for the polarizing beam splitter （PBS） is proposed. The method is based on effective medium theory and the method of designing single layer antireflection coating. The polarization performance of PBS is discussed by rigorous couple-wave analysis （RCWA） method at a wavelength of 1550 nm. The result shows that sub-wavelength metal rectangular grating is characterized by a high reflectivity, like metal films for TE polarization, and high transmissivity, like dielectric films for TM polarization. The optimal design accords well with the results simulated by RCWA method.