Eur. Phys. J. Plus (2015) 130: 4
https://doi.org/10.1140/epjp/i2015-15004-x

Regular Article

Dark optical solitons of Biswas-Milovic equation with dual-power law nonlinearity

¹ Department of Engineering Sciences, Faculty of Technology and Engineering, East of Guilan, University of Guilan, Rudsar-Vajargah, Iran
² Department of Mathematics, Faculty of Mathematical Sciences, University of Mazandaran, Babolsar, Iran
³ Department of Engineering Mathematics and Physics, Higher Institute of Engineering El Shorouk, El Shorouk, Egypt

^* e-mail: mirzazadehs2@guilan.ac.ir

Received: 11 August 2014
Revised: 20 November 2014
Accepted: 28 November 2014
Published online: 12 January 2015

Abstract

This paper studies the Biswas-Milovic equation, which is a generalized version of the nonlinear Schrödinger equation, with dual-power law nonlinearity. The G′/G-expansion method is employed to extract the dark 1-soliton solution from the equation. The results have a similar setting to the ones obtained earlier by the ansatz approach. Both constant and time-dependent coefficients are taken into consideration.