@article{dc32a3cdab884797ace8a4ba97b1715a,
title = "Unidirectional flow of discrete solitons in optical waveguide arrays with nonlinearity management",
abstract = "We propose a mechanism for realising a unidirectional flow of discrete solitons in optical waveguide arrays. Modulating the nonlinear interaction strength in each waveguide according to a double reflectionless potential well with slight difference in the depths of its two wells, we achieve a unidirectional flow of the soliton propagation. We verify clearly, through the transport coefficients as in terms of the speed of the incident soliton, that an incident soliton velocity window of finite width exists where unidirectional flow can be realised. We discuss the physics underlying this behaviour on the basis of energy exchange between the soliton's kinetic and interaction energies.",
keywords = "Cubic nonlinearity, Solitons, Unidirectional flow, Waveguides",
author = "{Al Khawaja}, U. and Al-Marzoug, {S. M.} and H. Bahlouli",
note = "Funding Information: All authors acknowledge the support of King Fahd University of Petroleum and Minerals (KFUPM) through grant RG181001 . UK expresses his deep appreciation to the chairman of the physics department at KFUPM for his continuous support during the progress of this work. UK acknowledges the support of UAE University through grant UPAR4 (2016). Funding Information: All authors acknowledge the support of King Fahd University of Petroleum and Minerals (KFUPM) through grant RG181001. UK expresses his deep appreciation to the chairman of the physics department at KFUPM for his continuous support during the progress of this work. UK acknowledges the support of UAE University through grant UPAR4 (2016). Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2020",
month = sep,
day = "7",
doi = "10.1016/j.physleta.2020.126625",
language = "English",
volume = "384",
journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",
issn = "0375-9601",
publisher = "Elsevier",
number = "25",
}