Interface solitons in one-dimensional locally coupled lattice systems
Апстракт
Fundamental solitons pinned to the interface between two discrete lattices coupled at a single site are investigated. Serially and parallel-coupled identical chains (system 1 and system 2), with self-attractive on-site cubic nonlinearity, are considered in one dimension. In these two systems, which can be readily implemented as arrays of nonlinear optical waveguides, symmetric, antisymmetric, and asymmetric solitons are investigated by means of the variational approximation (VA) and numerical methods. The VA demonstrates that the antisymmetric solitons exist in the entire parameter space, while the symmetric and asymmetric modes can be found below some critical value of the coupling parameter. Numerical results confirm these predictions for the symmetric and asymmetric fundamental modes. The existence region of numerically found antisymmetric solitons is also limited by a certain value of the coupling parameter. The symmetric solitons are destabilized via a supercritical symmetry-break...ing pitchfork bifurcation, which gives rise to stable asymmetric solitons, in both systems. The antisymmetric fundamental solitons, which may be stable or not, do not undergo any bifurcation. In bistability regions, stable antisymmetric solitons coexist with either symmetric or asymmetric solitons.
Извор:
Physical Review A, 2010, 82, 3Финансирање / пројекти:
- Ministry of Science, Serbia [141034], German-Israel Foundation [149/2006]
DOI: 10.1103/PhysRevA.82.033806
ISSN: 1050-2947
WoS: 000281657700017
Scopus: 2-s2.0-77956535269
Колекције
Институција/група
VinčaTY - JOUR AU - Hadžievski, Ljupčo AU - Gligorić, Goran AU - Maluckov, Aleksandra AU - Malomed, Boris A. PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4099 AB - Fundamental solitons pinned to the interface between two discrete lattices coupled at a single site are investigated. Serially and parallel-coupled identical chains (system 1 and system 2), with self-attractive on-site cubic nonlinearity, are considered in one dimension. In these two systems, which can be readily implemented as arrays of nonlinear optical waveguides, symmetric, antisymmetric, and asymmetric solitons are investigated by means of the variational approximation (VA) and numerical methods. The VA demonstrates that the antisymmetric solitons exist in the entire parameter space, while the symmetric and asymmetric modes can be found below some critical value of the coupling parameter. Numerical results confirm these predictions for the symmetric and asymmetric fundamental modes. The existence region of numerically found antisymmetric solitons is also limited by a certain value of the coupling parameter. The symmetric solitons are destabilized via a supercritical symmetry-breaking pitchfork bifurcation, which gives rise to stable asymmetric solitons, in both systems. The antisymmetric fundamental solitons, which may be stable or not, do not undergo any bifurcation. In bistability regions, stable antisymmetric solitons coexist with either symmetric or asymmetric solitons. T2 - Physical Review A T1 - Interface solitons in one-dimensional locally coupled lattice systems VL - 82 IS - 3 DO - 10.1103/PhysRevA.82.033806 ER -
@article{ author = "Hadžievski, Ljupčo and Gligorić, Goran and Maluckov, Aleksandra and Malomed, Boris A.", year = "2010", abstract = "Fundamental solitons pinned to the interface between two discrete lattices coupled at a single site are investigated. Serially and parallel-coupled identical chains (system 1 and system 2), with self-attractive on-site cubic nonlinearity, are considered in one dimension. In these two systems, which can be readily implemented as arrays of nonlinear optical waveguides, symmetric, antisymmetric, and asymmetric solitons are investigated by means of the variational approximation (VA) and numerical methods. The VA demonstrates that the antisymmetric solitons exist in the entire parameter space, while the symmetric and asymmetric modes can be found below some critical value of the coupling parameter. Numerical results confirm these predictions for the symmetric and asymmetric fundamental modes. The existence region of numerically found antisymmetric solitons is also limited by a certain value of the coupling parameter. The symmetric solitons are destabilized via a supercritical symmetry-breaking pitchfork bifurcation, which gives rise to stable asymmetric solitons, in both systems. The antisymmetric fundamental solitons, which may be stable or not, do not undergo any bifurcation. In bistability regions, stable antisymmetric solitons coexist with either symmetric or asymmetric solitons.", journal = "Physical Review A", title = "Interface solitons in one-dimensional locally coupled lattice systems", volume = "82", number = "3", doi = "10.1103/PhysRevA.82.033806" }
Hadžievski, L., Gligorić, G., Maluckov, A.,& Malomed, B. A.. (2010). Interface solitons in one-dimensional locally coupled lattice systems. in Physical Review A, 82(3). https://doi.org/10.1103/PhysRevA.82.033806
Hadžievski L, Gligorić G, Maluckov A, Malomed BA. Interface solitons in one-dimensional locally coupled lattice systems. in Physical Review A. 2010;82(3). doi:10.1103/PhysRevA.82.033806 .
Hadžievski, Ljupčo, Gligorić, Goran, Maluckov, Aleksandra, Malomed, Boris A., "Interface solitons in one-dimensional locally coupled lattice systems" in Physical Review A, 82, no. 3 (2010), https://doi.org/10.1103/PhysRevA.82.033806 . .