Photonic Bandgap Properties of One-Dimensional Graphene-Based Photonic Crystals with a Single Dielectric

International Conference on Materials Sciences and Nanomaterials

材料科学;物理学

Fang, Huimin^1 ; Cao, Jinghui^1 ; Liu, Jingzhuang^1 ; Wang, Chaoyang^1 ; Yue, Xifu^1 ; Wu, Jijiang^1

School of Science, Shandong University of Technology, Zibo

255049, China^1

关键词: Dielectric layer;    Dielectric medium;    Dielectric multilayers;    Filling factor;    Graphene sheets;    Low-frequency;    Numerical calculation;    Photonic band gap properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/230/1/012019/pdf
DOI  :  10.1088/1757-899X/230/1/012019

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The transfer matrix method was used to investigate the photonic bandgap properties of one-dimensional graphene-based photonic crystal (GPC) with a single dielectric medium. The first layer of the unit cell of the GPC consists of a traditional dielectric medium and the second is the same dielectric medium wherein graphene sheets are embedded. Numerical calculation results show that the width of the low frequency bandgap decreases as the period of the GPC, the permittivity of the dielectric, the thickness of the dielectric layer, the filling factor of the dielectric layer, and the period of the graphene-dielectric multilayer medium structure increase and increases as the thickness of the graphene-dielectric multilayer medium structure increases. The influence of the above parameters on the Bragg bandgap is different from their effects on the low frequency bandgap. Due to the graphene conductivity could be tuned by varying the chemical potential, so GPC is a tunable PC and may have many potential applications in photonics.