Actively controlled plasmonic Bragg reflector based on a graphene parallel-plate waveguide

被引：6
|
作者：
Wang, Yueke [1 ,2 ]
Chen, Quansheng [1 ,2 ]
Shen, Xinru [1 ,2 ]
机构：
[1] Jiangnan Univ, Opt Informat Sci & Technol Dept, Wuxi 214122, Jiangsu, Peoples R China
[2] Jiangnan Univ, Optoelect Engn & Technol Res Ctr, Wuxi 214122, Jiangsu, Peoples R China
来源：
AIP ADVANCES | 2015年 / 5卷 / 07期
基金：
中国国家自然科学基金;
关键词：
INSULATOR; ENHANCEMENT;
D O I：
10.1063/1.4927496
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We investigate theoretically and numerically a graphene parallel-plate waveguide structure with two alternate chemical potentials (which can be realized by alternately applying two biased voltages to graphene). A plasmonic Bragg reflector can be formed in infrared range because of the alternate effective refractive indexes of SPPs propagating along graphene sheets. By introducing a defect into the Bragg reflector, and then the defect resonance mode can be formed. Thanks to the tunable permittivity of graphene by bias voltages, the central wavelength and bandwidth of SPPs stop band, and the wavelength of the defect mode can be tuned. (C) 2015 Author(s).
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收藏
页数：7
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