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Proceedings Paper

Plasmonic devices based on the dual coupled graphene-integrated ring resonators
Author(s): Jicheng Wang; Xiushan Xia; Xiuye Liang; Jing Chen; Dongdong Liu
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Paper Abstract

We have proposed a couple of plasmonic devices based on graphene sheets and ring resonators. The highly frequency-tunable multi-mode plasmonically induced transparency (PIT) device based on monolayer graphene and rings for the mid-IR region is presented in theory firstly. The multi-mode transparency windows in the spectral responses and slow light effects can be achieved in plasmonic configuration composed of two graphene resonators coupled with single-layer graphene waveguide. By varying the Fermi energy of the graphene, the multi-mode PIT resonance can be dynamic controlled without reoptimizing the geometric parameters of the structures. Based on the coupled mode theory (CMT) and Fabry-Perot (FP), we numerically investigated direct coupling and indirect coupling in the graphene-integrated PIT systems. In addition, the theoretical plasmonic devices based on graphene sheets and ring resonators are also proposed to perform as 1×2 optical spatial switch or ultra -compact Mach-Zehnder interferometer. The finite element method (FEM) is carried on to verify our designs. Those designs may pave the ways for the further development of the compact high-performance plasmonic communication devices.

Paper Details

Date Published: 28 August 2015
PDF: 7 pages
Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 95472I (28 August 2015); doi: 10.1117/12.2186328
Show Author Affiliations
Jicheng Wang, Jiangnan Univ. (China)
Xiushan Xia, Jiangnan Univ. (China)
Xiuye Liang, Jiangnan Univ. (China)
Jing Chen, Jiangnan Univ. (China)
Dongdong Liu, Nanjing Univ. of Science & Technology (China)

Published in SPIE Proceedings Vol. 9547:
Plasmonics: Metallic Nanostructures and Their Optical Properties XIII
Allan D. Boardman; Din Ping Tsai, Editor(s)

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