太赫兹动态可控石墨烯y型环行器

2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2017-08-01 DOI:10.1109/IMOC.2017.8121025

V. Dmitriev, Wagner Castro, C. Nascimento

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引用次数: 6

摘要

提出并分析了一种新型的石墨烯基三孔环行器。该组件的横截面呈现由石墨烯、二氧化硅和硅组成的三层结构。环行器的平面内图呈现了一个圆形石墨烯谐振器和三个对称连接的波导。石墨烯被直流磁场正常磁化到其平面上。该器件的物理原理是基于磁化石墨烯谐振器的偶极共振。研究了不同参数对循环器性能的影响。数值模拟表明，在9.4%带宽下，中心频率为5.38 THz，隔离度为- 15 dB。偏置直流磁场为0.57 T。

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THz dynamically controllable graphene Y-circulator

A new type of the graphene-based three-port circulator is suggested and analysed. The cross-section of the component presents a three-layer structure consisting of graphene, silica and silicon. The in-plane figure of the circulator presents a circular graphene resonator and three waveguides symmetrically connected to it. The graphene is magnetized normally to its plane by a DC magnetic field. The physical principle of the device is based on the dipole resonance of the magnetized graphene resonator. We investigate the influence of different parameters on characteristics of the circulator. Numerical simulations demonstrate the isolation of −15 dB in 9.4% bandwidth with the central frequency 5.38 THz. The biasing DC magnetic field is 0.57 T.

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2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)

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