摘要
An ultrabroad and sharp transition bandpass flexible terahertz(THz)filter is designed using a multiple-layered metamaterial.This bandpass filter has excellent filtering capability,with a 3 dB bandwidth of about 0.47 THz and sharp band-edge transitions of 80 dB/THz and 96 dB/THz,respectively,and it can be realized by a coupling individual resonance mode.We find that the geometry parameters have an influence on the transmission profile,which are capable of giving us meaningful guidance in design of high profile bandpass THz filters.The numerical results show that the multiple-layered flexible metamaterial provides an effective way to achieve ultrabroad THz devices.
作者
LIANG Lan-Ju
YAO Jian-Quan
YAN Xin
梁兰菊;姚建铨;闫昕(College of Opto-electronics Engineering,Zaozhuang University,Zaozhuang 277160;College of Precision Instrument and Opto-electronics Engineering,Institute of Laser and Opto-electronics,Tianjin University,Tianjin 300072;Key Laboratory of Opto-electronics Information Technology(Ministry of Education),Tianjin University,Tianjin 300072)
基金
Supported by the National Basic Research Program of China under Grant No 2007CB310403
the High Education Science Technology Project of Shandong Province(No J11LG74)
the Science and Technology Project of Zaozhuang(No 201127).
