Synergy of topology and nonlinearity either inherently present or activated in photonic systems opens new gates for fundamental science and discoveries of new functionalities of the devices [1]. We are challenged by the sensitivity of the band topology to the modulation instability and vice versa, related bulk-edge correspondence and nonlinearity driven topological phase transitions in photonic lattices [2]. Here, our first findings in this emerging field will be briefly presented.
References
[1] D. Smirnova, D. Leykam, Y. D. Chong, and Y. Kivshar, Nonlinear topological photonics, Appl. Phys. Rev. 7, 021306 (2020).
[2] D. Leykam, E. Smolina, A. Maluckov, S. Flach, D. A. Smirnova, PRL 126, 073901 (2021).