Geometric dependence of metal-coated silicon nanowire plasmonic waveguides
- Authors
- Hwang, Yongsop; Park, Hong-Gyu
- Issue Date
- 2월-2014
- Publisher
- IOP PUBLISHING LTD
- Keywords
- surface plasmon; nanowire; waveguide
- Citation
- JOURNAL OF OPTICS, v.16, no.2
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF OPTICS
- Volume
- 16
- Number
- 2
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/99483
- DOI
- 10.1088/2040-8978/16/2/025001
- ISSN
- 2040-8978
- 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 mu m, 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.
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