Surface solitons in a nonlinear medium with a mixed lattice

作者：Xiaoyang Wang, Xuefei Zhang, Huilian Wei, T. F. Xu · 发表于：Physica Scripta · 年份：2025 · DOI：10.1088/1402-4896/ae1426 · 被引用次数：1 · 研究领域：Nonlinear Waves and Solitons、Nonlinear Photonic Systems、Advanced Fiber Laser Technologies

Abstract We study surface solitons in coupled nonlinear equations with two lattices of different modulation depths. The results show that the saturation parameter s , linear coupling constant κ , and lattice depth p r have significant effects on the amplitude, presence domain, and stability of the fundamental, two-peak and three-peak solitons. The stability of surface solitons is studied by linear stability analysis and real-time evolution methods. The stability domain of the surface soliton decreases with the increase of lattice depth p r and saturation parameter s in the interval of soliton existence. However, the stability domain of the soliton increases when the linear coupling constant κ increases.