Compact confinement of radially polarized light in graphene cylindrical hybrid plasmonic waveguide

Sicheng Zhang; Sizhen He; Kang Li; Xinyi Lu; Ji Xu; Zhongcheng Liang

doi:10.1117/12.2536575

19 November 2019 Compact confinement of radially polarized light in graphene cylindrical hybrid plasmonic waveguide

Sicheng Zhang, Sizhen He, Kang Li, Xinyi Lu, Ji Xu, Zhongcheng Liang

Proceedings Volume 11184, Optoelectronic Devices and Integration VIII; 111840X (2019) https://doi.org/10.1117/12.2536575
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

This work reports a graphene cylindrical hybrid plasmonic waveguide (GCHPW) consisting of a high-index dielectric core, a sandwiched low-index dielectric layer and a single layer graphene. Unlike traditional metallic cylindrical hybrid plasmonic waveguide (CHPW), GCHPW’s advance is that the nano-thickness light field can be significantly enhanced in the sandwiched low-index dielectric layer and the graphene interface, and a superior performance is achieved. Furthermore, the electromagnetic parameters of graphene is tunable, and the mode properties of the waveguide depend on the structural parameters, so the mode area and transmission distance can be flexibly optimized by adjusting these parameters. TM₀₁ mode with radially polarized transverse component is supported in the novel GCHPW, and a more compact confinement of light field is achieved. Additionally, the GCHPW has a smaller size compared with the CHPW. This study provides a valuable reference for design of graphene plasmonic waveguides and offers a new way for the limited transmission of radially polarized light.

Citation Download Citation

Sicheng Zhang, Sizhen He, Kang Li, Xinyi Lu, Ji Xu, and Zhongcheng Liang "Compact confinement of radially polarized light in graphene cylindrical hybrid plasmonic waveguide", Proc. SPIE 11184, Optoelectronic Devices and Integration VIII, 111840X (19 November 2019); https://doi.org/10.1117/12.2536575

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