基于石墨烯表面等离子激元极化子的太赫兹光子晶体波分复用器

2020 IEEE USNC-CNC-URSI North American Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2020-07-05 DOI:10.23919/USNC/URSI49741.2020.9321631

Chenglong Wang, Junchao Ji, Xidong Wu, Jinfang Zhou

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引用次数: 0

摘要

提出了一种基于石墨烯表面等离子激元(SPP)的二维光子晶体结构，用于太赫兹波分复用(WDM)。通过在地面上蚀刻具有相同高度的等直径圆柱形孔的周期性阵列，可以在石墨烯和地面之间的单栅极电压下在石墨烯上形成二维光子晶体的周期性SPP有效折射率曲线。基于这种不均匀的地面结构，提出了一种光子晶体多模干涉波分复用技术。仿真结果表明，所设计的器件在两个频率下的隔离度均高于17.30 dB，带宽均为0.06 THz。

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A terahertz photonic crystal wavelength division multiplexer based on graphene surface plasmon polaritons

This paper presents a two-dimensional (2D) photonic crystal structure based on graphene surface plasmon polaritons (SPP) for terahertz wavelength division multiplexing (WDM) applications. By etching a periodic array of equal-diameter cylindrical holes with the same height in the ground, a periodic SPP effective index profile of 2D photonic crystal can be created on graphene with a single gate voltage between graphene and ground. Based on this uneven ground structure, a photonic crystal multimode interference (MMI) WDM has been demonstrated. Simulation results show that the designed device exhibits isolations of higher than 17.30 dB and bandwidth of 0.06 THz at both frequencies.

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2020 IEEE USNC-CNC-URSI North American Radio Science Meeting (Joint with AP-S Symposium)

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