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Journal of Nanomaterials
Volume 2016 (2016), Article ID 3678578, 8 pages
http://dx.doi.org/10.1155/2016/3678578
Research Article

Active Multiple Plasmon-Induced Transparency with Graphene Sheets Resonators in Mid-Infrared Frequencies

1Department of Physics, Harbin Institute of Technology, Harbin 150001, China
2School of Science, Jiangnan University, Wuxi 214122, China

Received 20 January 2016; Accepted 30 March 2016

Academic Editor: Yan Wang

Copyright © 2016 Jicheng Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A multiple plasmon-induced transparency (PIT) device operated in the mid-infrared region has been proposed. The designed model is comprised of one graphene ribbon as main waveguide and two narrow graphene sheets resonators. The phase coupling between two graphene resonators has been investigated. The multimode PIT resonances have been found in both cases and can be dynamically tuned via varying the chemical potential of graphene resonators without optimizing its geometric parameters. In addition, this structure can get multiple PIT effect by equipping extra two sheets on the symmetric positions of graphene waveguide. The simulation results based on finite element method (FEM) are in good agreement with the resonance theory. This work may pave new way for graphene-based thermal plasmonic devices applications.