2023-11-282023-11-282021CARDOSO, Wesley Bueno; AVELAR, Ardiley Torres; BAZEIA, Dionisio. Propagation of solitons in quasi-periodic nonlinear coupled waveguides. Brazilian Journal of Physics, São Paulo, v. 51, p. 151-156, 2021. DOI: 10.1007/s13538-020-00836-w. Disponível em: https://link.springer.com/article/10.1007/s13538-020-00836-w. Acesso em: 13 set. 2023.0103-9733e- 1678-4448https://link.springer.com/article/10.1007/s13538-020-00836-wThis 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.engAcesso RestritoManakov systemSolitonsQuasi-periodic interactionsArtigo10.1007/s13538-020-00836-w