Terahertz plasmonic switch based on periodic array of graphene/silicon

被引：5
|
作者：
Derakhshi, M. [1 ]
Fathi, D. [2 ]
机构：
[1] Tarbiat Modares Univ, Sch Elect & Comp Engn, Optoelect, POB 14115-194, Tehran, Iran
[2] Tarbiat Modares Univ, Sch Elect & Comp Engn, POB 14115-194, Tehran, Iran
来源：
SCIENTIA IRANICA | 2017年 / 24卷 / 06期
关键词：
Plasmonic waveguide; Switch; Graphene; Anisotropic; Terahertz; WAVE-GUIDES; METAMATERIALS;
D O I：
10.24200/sci.2017.4423
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a plasmonic switch based on anisotropic structure consisting of graphene and silicon layers, such as one-dimensional photonic crystal. The plasmonic wave in this switch is propagated inside core surrounded by two periodic arrays of grapliene/silicon. By changing the chemical potential of graphene leading to the change of permittivity of anisotropic array, we can adjust the propagation length of plasmonic wave. The obtained results show that, at the frequency of 30 THz with adjusting the chemical potential of graphene, the chemical potential of 0.4 eV and 0.2 eV can be obtained for the ON and OFF states, respectively. In addition, the ON/OFF ratio is about 24. (C) 2017 Sharif University of Technology. All rights reserved.
引用
收藏
页码：3452 / 3457
页数：6
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