Eur. Phys. J. D (2016) 70: 65
https://doi.org/10.1140/epjd/e2016-60631-x

Regular Article

Numerical study of propagation properties of surface plasmon polaritons in nonlinear media

¹ Department of Electrical and Electronic Engineering, Islamic University of Technology (IUT), Board Bazar, Gazipur - 1704, Bangladesh
² Department of Electrical Engineering, King Fahd University of Petroleum & Minerals, Dhahran 31261, Kingdom of Saudi Arabia
³ Photonics Laboratory, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia

^a e-mail: gsaber@iut-dhaka.edu

Received: 4 November 2015
Received in final form: 12 January 2016
Published online: 24 March 2016

Abstract

We present a time-domain algorithm for simulating nonlinear propagation of surface plasmon polaritons (SPPs) in chalcogenide glass. Due to the high non-linearity property and strong dispersion and confinement chalcogenide glasses are widely known as ultrafast nonlinear materials. We have used the finite difference time domain (FDTD) method to develop the simulation algorithm for the current analysis. We have modeled the frequency dependent dispersion properties and third order nonlinearity property of chalcogenide glass utilizing the general polarization algorithm merged in the auxiliary differential equation (ADE) method. The propagation dynamics of the whole structure with and without third order nonlinearity property of chalcogenide glass have been simulated and the effect of nonlinearity on the propagation properties of SPP has been investigated.