Issue 64, 2017, Issue in Progress

Tunable electromagnetically induced transparency based on terahertz graphene metamaterial

Abstract

By patterning graphene on a SiO2/Si substrate, in this paper, we designed and numerically investigated a terahertz electromagnetically induced transparency (EIT) graphene metamaterial, which consists of two coupled split ring resonators (SRRs) placed in an orthogonally twisted fashion, acting as the bright and dark elements, respectively. The calculated surface currents show that the dark mode excited by the near field coupling between two resonators can induce a distinct transparency peak in the transmission spectrum. Moreover, the amplitude and position of the transparency peak as well as the corresponding group delay can be actively tuned by changing the relaxation time or Fermi energy of graphene. Therefore, the graphene metamaterial with the actively tunable EIT peak exhibits potential applications in light storage, modulators, tunable sensors and switchers.

Graphical abstract: Tunable electromagnetically induced transparency based on terahertz graphene metamaterial

Article information

Article type
Paper
Submitted
18 Jun 2017
Accepted
07 Aug 2017
First published
17 Aug 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 40321-40326

Tunable electromagnetically induced transparency based on terahertz graphene metamaterial

X. He, Y. Huang, X. Yang, L. Zhu, F. Wu and J. Jiang, RSC Adv., 2017, 7, 40321 DOI: 10.1039/C7RA06770D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements