Tunable dual-band terahertz metamaterial bandpass filters

被引：125
|
作者：
Zhu, Yanhan [1 ,2 ]
Vegesna, Subash [1 ]
Zhao, Yong [1 ,2 ]
Kuryatkov, Vladimir [1 ,2 ]
Holtz, Mark [2 ,3 ]
Fan, Zhaoyang [1 ,2 ]
Saed, Mohammad [1 ]
Bernussi, Ayrton A. [1 ,2 ]
机构：
[1] Texas Tech Univ, Dept Elect & Comp Engn, Lubbock, TX 79409 USA
[2] Texas Tech Univ, Nano Tech Ctr, Lubbock, TX 79409 USA
[3] Texas Tech Univ, Dept Phys, Lubbock, TX 79409 USA
来源：
OPTICS LETTERS | 2013年 / 38卷 / 14期
基金：
美国国家科学基金会;
关键词：
Vanadium dioxide;
D O I：
10.1364/OL.38.002382
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report metamaterial terahertz (THz) bandpass filters with tunable dual-band selectivity. The shift in the center frequency of the device is achieved by actively modifying the effective length of the resonators. This was realized by introducing vanadium dioxide (VO2) bridges interconnecting specific regions of each resonator. Raising the temperature across the phase transition shifted the resonance frequency by similar to 32% due to changes in the electrical conductivity of the VO2. Measured THz transmission response of the proposed dual-band filter was in good correspondence with simulations. (C) 2013 Optical Society of America
引用
收藏
页码：2382 / 2384
页数：3
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