Polarization Insensitivity in Double-Split Ring and Triple-Split Ring Terahertz Resonators  

作　　者：吴倩男 兰峰 唐效频 杨梓强 

机构地区：[1]School of Physical Electronics,University of Electronic Science and Technology of China

出　　处：《Chinese Physics Letters》2015年第10期123-126,共4页中国物理快报（英文版）

基　　金：Supported by the National High-Technology Research and Development Program of China under Grant No 2011AA010204;the National Natural Science Foundation of China under Grant No 91438118

摘　　要：A modified double-split ring resonator and a modified triple-split ring resonator, which offer polarization-insensitive performance, are investigated, designed and fabricated. By displacing the two gaps of the conventional double- split ring resonator away from the center, the second resonant frequency for the 0° polarized wave and the resonant frequency for the 90° polarized wave become increasingly close to each other until they are finally identical. Theoretical and experimental results show that the modified double-split ring resonator and the modified triple-split ring resonator are insensitive to different polarized waves and show strong resonant frequency dips near 433 and 444OHz, respectively. The results of this work suggest new opportunities for the investigation and design of polarization-dependent terahertz devices based on split ring resonators.A modified double-split ring resonator and a modified triple-split ring resonator, which offer polarization-insensitive performance, are investigated, designed and fabricated. By displacing the two gaps of the conventional double- split ring resonator away from the center, the second resonant frequency for the 0° polarized wave and the resonant frequency for the 90° polarized wave become increasingly close to each other until they are finally identical. Theoretical and experimental results show that the modified double-split ring resonator and the modified triple-split ring resonator are insensitive to different polarized waves and show strong resonant frequency dips near 433 and 444OHz, respectively. The results of this work suggest new opportunities for the investigation and design of polarization-dependent terahertz devices based on split ring resonators.

关 键 词：SRR Polarization Insensitivity in Double-Split Ring and Triple-Split Ring Terahertz Resonators 

分 类 号：TN629.1[电子电信—电路与系统]