Salient Features of Deeply Subwavelength Guiding of Terahertz Radiation in Graphene-Coated Fibers

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• 作者：Artur R. Davoyan ; Nader Engheta
• 刊名：ACS Photonics
• 出版年：2016
• 出版时间：May 18, 2016
• 年：2016
• 卷：3
• 期：5
• 页码：737-742
• 全文大小：491K
• 年卷期：0
• ISSN：2330-4022

文摘

Here we discuss theoretically some of the notable features of modal characteristics in the graphene-coated deeply subwavelength fiber waveguide, providing a performance comparison between this guided-wave structure and some other typical THz waveguides. We highlight a cutoff-free propagation of a fundamental graphene-plasmon mode with an effective mode area, which can in principle be smaller than (λ/100)². We also discuss the phonon-plasmon hybridization that is expected for waveguides with polar dielectric core (e.g., SiO₂ and SiC). We believe that this guiding structure, being at the intersection of optics and electronics, may pave the way for a variety of nanoscience applications.