Abstract
This paper is a tribute to Professor Mahir Saleh Hussein. It is motivated by two works which we published in collaboration in Cardoso et al. (Phys. Lett. A 374, 2356 2010, 374, 4594 2010). Here, we study the propagation of solitons in nonlinear coupled waveguides described by coupled nonlinear Schrödinger equations. In a specific case, these coupled equations behave as an exactly integrable nonlinear system known as the Manakov model. We introduce quasi-periodic nonlinear couplings by merging the components that allow changing the nonlinearities of the system, and study how the quasi-periodic nonlinearities modify the behavior of the solutions.
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Funding
The authors acknowledge the financial support of the Brazilian agencies CNPq (#312723/2018-0, #425718/2018-2, #404913/2018-0, #303469/2019-6 & #306065/2019-3), CAPES (PROCAD 2013), and FAPEG (PRONEM #201710267000540, PRONEX #201710267000503). This work was also performed as part of the Brazilian National Institute of Science and Technology (INCT) for Quantum Information (#465469/2014-0). It was also supported by Paraiba State Research Foundation, FAPESQ-PB Grant no. 0015/2019.
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Cardoso, W.B., Avelar, A.T. & Bazeia, D. Propagation of Solitons in Quasi-periodic Nonlinear Coupled Waveguides. Braz J Phys 51, 151–156 (2021). https://doi.org/10.1007/s13538-020-00836-w
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DOI: https://doi.org/10.1007/s13538-020-00836-w