Nonlinear Sciences, Pattern Formation and Solitons, Pattern Formation and Solitons (nlin.PS)
journal:
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date:
2023-05-25 16:00:00
Abstract
We numerically demonstrate the unidirectional flow of flat-top solitons when interacting with two reflectionless potential wells with slightly different depths. The system is described by a nonlinear Schr\"{o}dinger equation with dual nonlinearity. The results show that for shallow potential wells, the velocity window for unidirectional flow is larger than for deeper potential wells. A wider flat-top solitons also have a narrow velocity window for unidirectional flow than those for thinner flat-top solitons.