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Topological solitons in coupled Su–Schrieffer–Heeger waveguide arraysстатья
Дата последнего поиска статьи во внешних источниках: 26 июня 2024 г.
- Авторы: Khalil S., Kartashov Ya V.
- Журнал: Optics Letters
- Том: 49
- Номер: 13
- Год издания: 2024
- Издательство: Optical Society of America
- Местоположение издательства: United States
- Первая страница: 3580
- Последняя страница: 3583
- DOI: 10.1364/ol.529646
- Аннотация: We investigate the formation of multipole topological solitons at the edges of two and three coupled parallel Su–Schrieffer–Heeger (SSH) waveguide arrays. We show that independent variations of waveguide spacing in the unit cells (dimers) in coupled waveguide arrays result in the emergence at their edges of several topological edge states with different internal symmetries. The number of emerging edge states is determined by how many arrays are in topologically nontrivial phase. In the presence of nonlinearity, such edge states give rise to families of multipole topological edge solitons with distinct stability properties. Our results illustrate that coupling between quasi-one-dimensional topological structures substantially enriches the variety of stable topological edge solitons existing in them.
- Добавил в систему: Косарева Ольга Григорьевна