Terahertz narrow bandstop, broad bandpass filter using double-layer S-shaped metamaterials  

作　　者：LIANG LanJu JIN BiaoBing WU JingBo ZHOU GaoChao ZHANG YongGang TU XueCou JIA Tao JIA XiaoQing CAO ChunHai KANG Lin XU WeiWei CHEN Jian 

机构地区：[1]College of Optoelectronics Engineering, Zaozhuang University [2]Research Institute of Superconductor Electronics (RISE), School of Electronic Science and Engineering,Nanjing University

出　　处：《Science China(Information Sciences)》2013年第12期128-134,共7页中国科学（信息科学）（英文版）

基　　金：supported by National Basic Research Program of China(973 Program)(Grant No.2011CBA00107);National High-tech R&D Program of China(863 Program)(Grant No.2011AA010204);National Natural Science Foundation of China(Grant No.61071009);Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD);Jiangsu Provincial Key Laboratory of Advanced Manipulating Technique of Electromagnetic Wave,High Education Science Technology project of Shandong Province(Grant No.J13LN07);Technological Development project of Shandong Province(Grant No.2013GGA04021)

摘　　要：Abstract In this study, double-layer S-shaped metamaterials （MMs） are analyzed by terahertz time-domain spectroscopy. These materials exhibit narrow bandstop and broad bandpass transmission properties at both horizontal and vertical electric-field polarizations. A 117% increase in the unloaded quality factor is experimen- tally observed for these materials. The center frequency is approximately 0.45 THz, with a 3-dB bandwidth of 0.52 THz from 0.20 to 0.72 THz at normal incidence. The measured average insertion loss is 0.5 dB with a ripple of 1 dB. These results show that double-layer S-shaped MMs are effective in designing tunable terahertz devices.Abstract In this study, double-layer S-shaped metamaterials （MMs） are analyzed by terahertz time-domain spectroscopy. These materials exhibit narrow bandstop and broad bandpass transmission properties at both horizontal and vertical electric-field polarizations. A 117% increase in the unloaded quality factor is experimen- tally observed for these materials. The center frequency is approximately 0.45 THz, with a 3-dB bandwidth of 0.52 THz from 0.20 to 0.72 THz at normal incidence. The measured average insertion loss is 0.5 dB with a ripple of 1 dB. These results show that double-layer S-shaped MMs are effective in designing tunable terahertz devices.

关 键 词：metamaterial TERAHERTZ filter double-layer S-shaped material transmission 

分 类 号：TN713.5[电子电信—电路与系统] O434.3[机械工程—光学工程]