Graphene-based four-port circulator with an elliptical resonator for THz applications

被引：1
|
作者：
Portela, Gianni [1 ]
Dmitriev, Victor [1 ]
Oliveira, Thiago [1 ]
Barros, Gabriel [1 ]
Castro, Wagner [2 ]
机构：
[1] Fed Univ Para, Dept Elect & Biomed Engn, Av Augusto Correa 01, BR-66075110 Belem, Para, Brazil
[2] Fed Rural Univ Amazonia, Cyberspace Inst, Av Presidente Tancredo Neves 2501, BR-66077830 Belem, Para, Brazil
来源：
JOURNAL OF COMPUTATIONAL ELECTRONICS | 2021年 / 20卷 / 06期
关键词：
Circulators; Graphene; Terahertz radiation; Temporal coupled-mode theory; COUPLED-MODE THEORY; PHOTONIC CRYSTALS; TERAHERTZ; FILTER;
D O I：
10.1007/s10825-021-01790-9
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 suggest a new graphene-based four-port circulator for THz applications that consists of two parallel graphene waveguides coupled to an elliptical graphene resonator between them. The graphene elements are deposited on a dielectric substrate. An external constant magnetic field is applied normal to the resonator. The frequency response of the circulator obtained from numerical simulations performed with COMSOL Multiphysics software is in good agreement with those obtained from the ad hoc temporal coupled-mode theory. The analysis shows that the bandwidth of the circulator is about 5.7% around the central frequency 5.03 THz with the applied constant magnetic field of 0.8 T.
引用
收藏
页码：2471 / 2482
页数：12
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