Hypersensitive and Tunable Terahertz Wave Switch Based on Non-Bragg Structures Filled with Liquid Crystals

被引：18
作者：
Zhang, Lu [1 ,2 ]
Fan, Ya-Xian [1 ,2 ]
Liu, Huan [1 ,2 ]
Xu, Lan-Lan [1 ,2 ]
Xue, Jiu-Ling [1 ,2 ]
Tao, Zhi-Yong [1 ,2 ]
机构：
[1] Harbin Engn Univ, Key Lab In Fiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China
[2] Harbin Engn Univ, Coll Sci, Phys Res Ctr, Harbin 150001, Peoples R China
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2017年 / 35卷 / 14期
基金：
中国国家自然科学基金;
关键词：
Guided waves; magnetically tuning; resonances; terahertz switch; PHOTONIC CRYSTAL; OPTICAL-PROPERTIES; PHASE-SHIFTER; GUIDE; RESONANCE; SILICON; METAMATERIAL; SPECTROSCOPY; GRATINGS; FILTER;
D O I：
10.1109/JLT.2017.2707554
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We investigateda hypersensitive and tunable terahertz (THz) wave switch based on liquid-crystal-filled non-Bragg structures. Non-Bragg structures, which consist of periodically corrugated metallic tube walls, provide spectra with very sharp rising edges, making them usable for sensitive switching. Tunability can be achieved by dynamically shifting the rising edge of a THz spectrum by using an externally applied magnetic field to change the orientations of the nematic liquid crystal (E7) molecules. The simulated results revealed that the switch effects are hypersensitive and tunable in the THz frequency range and that such switches could be applicable in future THz systems.
引用
收藏
页码：3092 / 3098
页数：7
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