Abstract

By integrating the metallic metamaterials (MMs) with a graphene layer, the resonant properties of an active tunable device based on the metal-${\mathrm{SiO}}_2$-graphene (${\mathrm{MSiO}}_2\mathrm{G}$) structure have been theoretically investigated in the near-IR spectral region. The results manifest that the influences of the graphene layer on the propagation properties are significant. Owing to the tunability of the Fermi level of graphene, the resonance of transmitted or reflected curves can be tuned in a wide range (160–193 THz). To an original metal unit cell structure, an elevated Fermi level of graphene layer enhances the resonance dips and shifts it to the higher frequency. Compared with the original structure, the corresponding complementary MMs structure shows a much sharper spectral curve and can be used to fabricate a switcher or filters. The results are very helpful for designing graphene plasmonic devices.

© 2015 Optical Society of America

Investigation of graphene assisted tunable terahertz metamaterials absorber

Xiaoyong He, Xu Zhong, Fangting Lin, and Wangzhou Shi
Opt. Mater. Express 6(2) 331-342 (2016)

Investigation of graphene-supported tunable asymmetric terahertz metamaterials

Chenyuyi Shi, Xiaoyong He, Feng Liu, Fangting Lin, and Hao Zhang
J. Opt. Soc. Am. B 35(3) 575-581 (2018)

Graphene-supported tunable bidirectional terahertz metamaterials absorbers

Jun Peng, Jin Leng, Duo Cao, Xiaoyong He, Fangting Lin, and Feng Liu
Appl. Opt. 60(22) 6520-6525 (2021)

Investigation of graphene-supported submillimeter adjustable metamaterial absorbers

Shizeng Jiang, Duo Cao, Shilin Liu, Yan Cheng, Jiaxin Li, He Lianhao, Fantting Lin, Feng Liu, and Xiaoyong He
J. Opt. Soc. Am. B 41(4) 827-835 (2024)

Flexible properties of THz graphene bowtie metamaterials structures

Xiaoyong He, Guina Xiao, Feng Liu, Fangting Lin, and Wangzhou Shi
Opt. Mater. Express 9(1) 44-55 (2019)