Eur. Phys. J. D (2016) 70: 4
https://doi.org/10.1140/epjd/e2015-60244-y

Regular Article

Modal properties of novel hybrid plasmonic waveguide consisting of two identical dielectric nanotubes symmetrically placed on both sides of a thin metal film

¹ Computer Center of Shanxi University, Taiyuan 030006, P.R. China
² College of Physics and Electronics Engineering of Shanxi University, Taiyuan 030006, P.R. China

^a e-mail: tianjp@sxu.edu.cn

Received: 22 April 2015
Received in final form: 2 September 2015
Published online: 12 January 2016

Abstract

A novel type of hybrid plasmonic waveguide consisting of two identical dielectric nanotubes symmetrically placed on both sides of a thin metal film is proposed. The propagation properties of the antisymmetric and symmetric modes are numerically analyzed at the telecommunication working wavelength. Theoretical investigations reveal that deep-subwavelength mode confinement as well as long-range propagation length can be achieved simultaneously. This structure could facilitate potential applications in long-range plasmon waveguiding and compact high-performance on-chip photonic components.