Plasmonic devices based on the dual coupled graphene-integrated ring resonators

Jicheng Wang; Xiushan Xia; Xiuye Liang; Jing Chen; Dongdong Liu

doi:10.1117/12.2186328

28 August 2015 Plasmonic devices based on the dual coupled graphene-integrated ring resonators

Jicheng Wang, Xiushan Xia, Xiuye Liang, Jing Chen, Dongdong Liu

Proceedings Volume 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII; 95472I (2015) https://doi.org/10.1117/12.2186328
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

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.

Citation Download Citation

Jicheng Wang, Xiushan Xia, Xiuye Liang, Jing Chen, and Dongdong Liu "Plasmonic devices based on the dual coupled graphene-integrated ring resonators", Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 95472I (28 August 2015); https://doi.org/10.1117/12.2186328

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