• 文献标题:   Study of modal properties in graphene-coated nanowires integrated with substrates
  • 文献类型:   Article
  • 作  者:   TENG D, GUO JK, YANG YD, MA WS, WANG K
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS BLASERS OPTICS
  • ISSN:   0946-2171 EI 1432-0649
  • 通讯作者地址:   Zhengzhou Normal Univ
  • 被引频次:   0
  • DOI:   10.1007/s00340-020-07525-1
  • 出版年:   2020

▎ 摘  要

In this paper, we show that graphene-coated nanowire integrated with a semi-elliptical dielectric substrate could enable excellent subwavelength transmission performance in the mid-infrared range. The fundamental graphene plasmon mode behaviors on the thickness of silica layer, ratio of long- to short-axis of the ellipse, nanowire radius, and chemical potential of graphene are revealed in detail. By improving the geometric parameters and the surface conductivity of graphene, results show that deep-subwavelength modal field size and long propagation could be achieved. Our findings may promote the applications of graphene-coated nanowires in tunable nanoscale photonic devices and sensors.