Tunable Broadband Reflective Filter Based on a Graphene-Dielectric Multilayers

2nd International Conference on Frontiers of Materials Synthesis and Processing

Li, Chunyu^1 ; Wang, Juan^1 ; Zhang, Tieyan^1 ; Liu, Lu^1 ; Ying, Xiangxiao^1 ; Liu, Zhijun^1

School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan

610054, China^1

关键词: Dielectric multilayers;    Effective medium theories;    Filtering properties;    Infrared filters;    Multi-layered graphene;    Reflectance changes;    Reflective filters;    Widely tunable;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/493/1/012068/pdf
DOI  :  10.1088/1757-899X/493/1/012068

来源: IOP

【 摘 要 】

In this paper, we reveal tunable broadband reflective filtering property in graphene-dielectric multilayers using transfer matrix method and effective medium theory. A dramatic reflectance change from near-zero value to close-to-unit is shown to be achievable with its spectral band widely tunable from 3.5 μm to 21 μm by changing graphene Fermi energy. Our proposed multilayered graphene-dielectric metamaterial has great potential for developing tunable infrared filters and switches.