Josephson oscillations of edge quasi-solitons in a photonic-topological coupler

Nataliia Bazhan*, Boris Malomed, Alexander Yakimenko

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We introduce a scheme of a photonic coupler built of two parallel topological-insulator slab waveguides with the intrinsic Kerr nonlinearity, separated by a lattice spacing. Josephson oscillations (JOs) of a single edge quasi-soliton (QS) created in one slab, and of a pair of QSs created in two slabs, are considered. The single QS jumping between the slabs is subject to quick radiative decay. However, the JOs of the co-propagating QS pair may be essentially more robust, as one QS absorbs dispersive waves emitted by the other. The most robust JO regime is featured by the pair of QSs with phase shift π between them.

Original languageEnglish
Pages (from-to)6067-6070
Number of pages4
JournalOptics Letters
Issue number24
StatePublished - 15 Dec 2021


Dive into the research topics of 'Josephson oscillations of edge quasi-solitons in a photonic-topological coupler'. Together they form a unique fingerprint.

Cite this