Mr. Sizhen He Profile

Sizhen He

at Lehigh University

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Proceedings Article | 19 November 2019 Paper

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, 111840X (2019) https://doi.org/10.1117/12.2536575

KEYWORDS: Graphene, Plasmonic waveguides, Dielectrics, Electromagnetism, Waveguides

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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.

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