Eur. Phys. J. D 62, 421-424 (2011)
https://doi.org/10.1140/epjd/e2011-10288-0

Regular Article

Solitary waves in a negative index material with dispersive permittivity and permeability

Department of Physics, Indian Institute of Technology Guwahati, Guwahati 781039, India

^a e-mail: aksarma@iitg.ernet.in

Received: 17 May 2010
Received in final form: 14 August 2010
Published online: 18 March 2011

Abstract

We present a solitary wave solution of the generalized nonlinear Schrödinger equation for dispersive permittivity and permeability using a scaling transformation and coupled amplitude-phase formulation. The constraint conditions and the frequency regimes for the existence of solitary waves in a negative index material (NIM) have been worked out. It is shown that soliton shift in a NIM may be suppressed by a judicious choice of the TOD and self-steepening parameter.