A Transmission-Type Electrically Tunable Polarizer Based on Graphene Ribbons at Terahertz Wave Band  

作　　者：唐祎程 朱志宏 张检发 郭楚才 刘肯 袁晓东 秦石乔 

机构地区：[1]College of Optoelectronic Science and Engineering,National University of Defense Technology [2]State Key Laboratory of High Performance Computing,National University of Defense Technology

出　　处：《Chinese Physics Letters》2015年第2期91-94,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2012CB933501;the National Natural Science Foundation of China under Grant Nos 61177051,11304389,61404174 and 61205087

摘　　要：We theoretically and numerically demonstrate that a transmission-type electrically tunable polarizer can be realized by using graphene ribbons supported on a dielectric film with a graphene sheet behind. The polarization mechanism originates from the antenna plasmon resonance of graphene stripes. The results of full-wave numerical simulations reveal that transmittance of 0.70 for one polarization and 0.0073 for another polarization can be obtained at normal incidence. The transmission-type electrically tunable polarizer provides and facilitates a variety of applications, including filtering, detecting, and imaging.We theoretically and numerically demonstrate that a transmission-type electrically tunable polarizer can be realized by using graphene ribbons supported on a dielectric film with a graphene sheet behind. The polarization mechanism originates from the antenna plasmon resonance of graphene stripes. The results of full-wave numerical simulations reveal that transmittance of 0.70 for one polarization and 0.0073 for another polarization can be obtained at normal incidence. The transmission-type electrically tunable polarizer provides and facilitates a variety of applications, including filtering, detecting, and imaging.

关 键 词：THz A Transmission-Type Electrically Tunable Polarizer Based on Graphene Ribbons at Terahertz Wave Band 

分 类 号：TH74[机械工程—光学工程] O613.71[机械工程—仪器科学与技术]