Geometric dependence of metal-coated silicon nanowire plasmonic waveguides

Yongsop Hwang, Hong Gyu Park

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We report the geometric dependences of metal-coated silicon nanowire (Si NW) plasmonic waveguides on their propagation lengths and mode areas. We examined Si NWs with four different cross-sectional shapes. Numerical simulations showed that propagation lengths and mode areas are highly dependent on the cross-sectional geometries of Si NWs. In particular, the TM-like mode in a hexagonal-shaped Si NW plasmonic waveguide without an air void has the longest propagation length of 18.20 μm, which is 4.7 times larger than that of the TM-like mode in a circular-shaped Si NW plasmonic waveguide. This study can be a useful guide for the design and application of metal-coated Si NW plasmonic waveguides.

Original languageEnglish
Article number025001
JournalJournal of Optics (United Kingdom)
Volume16
Issue number2
DOIs
Publication statusPublished - 2014 Feb

Keywords

  • Nanowire
  • Surface plasmon
  • Waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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