Teng Da, Wang Kai, Li Zhe
School of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, Henan 450044, China.
Key Laboratory of Infrared Imaging Materials and Detectors, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
Nanomaterials (Basel). 2020 Jan 28;10(2):229. doi: 10.3390/nano10020229.
In recent years, graphene-coated nanowires (GCNWs) have attracted considerable research interest due to the unprecedented optical properties of graphene in terahertz (THz) and mid-infrared bands. Graphene plasmons in GCNWs have become an attractive platform for nanoscale applications in subwavelength waveguides, polarizers, modulators, nonlinear devices, etc. Here, we provide a comprehensive overview of the surface conductivity of graphene, GCNW-based plasmon waveguides, and applications of GCNWs in optical devices, nonlinear optics, and other intriguing fields. In terms of nonlinear optical properties, the focus is on saturable absorption. We also discuss some limitations of the GCNWs. It is believed that the research of GCNWs in the field of nanophotonics will continue to deepen, thus laying a solid foundation for its practical application.
近年来，由于石墨烯在太赫兹（THz）和中红外波段具有前所未有的光学特性，石墨烯包覆纳米线（GCNWs）引起了相当大的研究兴趣。GCNWs中的石墨烯等离激元已成为亚波长波导、偏振器、调制器、非线性器件等纳米级应用的一个有吸引力的平台。在此，我们全面概述了石墨烯的表面电导率、基于GCNW的等离激元波导以及GCNWs在光学器件、非线性光学和其他有趣领域的应用。在非线性光学特性方面，重点是饱和吸收。我们还讨论了GCNWs的一些局限性。相信GCNWs在纳米光子学领域的研究将不断深入，从而为其实际应用奠定坚实基础。
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