Hybrid wedge plasmon polariton waveguide with good fabrication-error- tolerance for ultra-deep-subwavelength mode confinement

Document Type

Article

Publication Date

11-7-2011

Abstract

A novel hybrid plasmonic waveguide consisting of a high-index dielectric nanowire placed above a triangular metal wedge substrate is proposed and analyzed theoretically. The strong coupling between the wedge plasmon polariton and the dielectric nanowire mode results in both the ultra-tight confinement and low propagation loss. Compared to the previous studied hybrid surface plasmon polariton structures without the metal wedge substrate, stronger field enhancement in the low-index gap region as well as improved figure of merit (FOM) could be realized simultaneously. Results of the modal properties considering certain fabrication imperfections show that the proposed structure is also quite tolerant to these errors. © 2011 Optical Society of America.

Identifier

80755143320 (Scopus)

Publication Title

Optics Express

External Full Text Location

https://doi.org/10.1364/OE.19.022417

e-ISSN

10944087

First Page

22417

Last Page

22422

Issue

23

Volume

19

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