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Proceedings Paper

A novel long-range hybrid insulator-metal-insulator plasmonic waveguide with tight light confinement
Author(s): Sheng Qu; Lu Dong; Congcong Ma; Lei Wu; Shulong Wang; Hongxia Liu
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Paper Abstract

The paper presents a novel long-range hybrid insulator-metal-insulator (IMI) plasmonic waveguide, which is composed of two silicon wedge nanowires and a cylinder metal nanowire. Compared with other hybrid plasmonic waveguide, the proposed waveguide shows better properties. With strong coupling between the silicon nanowire mode and long-range surface plasmon polariton (SPP) mode, both deep subwavelength mode confinement and low propagation loss have been achieved. The properties of the hybrid IMI plasmonic waveguide including propagation length (L), normalized mode area (Aeff /A0) and figure of merit (FoM) are evaluated. Compared with the hybrid plasmonic waveguides, the designed waveguide enables an ultra-small deep-subwavelength mode in smaller area. The propagation length is nearly 1mm and FoM is ~104, which is larger than that of wedge or rectangle hybrid plasmonic waveguides. We also evaluate the impacts of practical fabrication imperfections on the mode properties. The results show that the proposed waveguide is fairly tolerant to the practical fabrication errors in geometry parameters. The proposed waveguide has many potential applications for nano-photonic components of high performance.

Paper Details

Date Published: 28 February 2017
PDF: 7 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102560B (28 February 2017); doi: 10.1117/12.2268786
Show Author Affiliations
Sheng Qu, Xidian Univ. (China)
Lu Dong, Xidian Univ. (China)
Congcong Ma, Xidian Univ. (China)
Lei Wu, Xidian Univ. (China)
Shulong Wang, Xidian Univ. (China)
Hongxia Liu, Xidian Univ. (China)

Published in SPIE Proceedings Vol. 10256:
Second International Conference on Photonics and Optical Engineering
Chunmin Zhang; Anand Asundi, Editor(s)

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