Statistical analysis of the probability of different soliton states in integrated high- microring resonators
Phys. Rev. A 113, 033513 – Published 9 March, 2026
DOI: https://doi.org/10.1103/s528-3c3b
Abstract
Featuring unique properties, dissipative Kerr solitons generated in integrated ring microresonators (soliton microcombs) have a great potential for a wide range of practical applications. The direct resonance scanning method, assuming the increasing wavelength of the pump laser across a microresonator mode, is the most common and robust way for soliton state excitation. However, in this case the generation of soliton states is a probabilistic process, which hampers the development of microcomb-based devices for specific applications. In this paper, we investigated experimentally the probability of different soliton state excitations depending on the pump power, frequency scanning speed, and microresonator dispersion characteristics. Having conducted a statistical analysis of soliton states occurring for various microresonators, it was demonstrated that strong anomalous group velocity dispersion facilitates single-soliton state generation. Also, it was revealed that there is a cutoff value of the normalized pump amplitude, above which no soliton states can be excited. Our findings uncover some alternative patterns in the soliton excitation process through the direct resonance scanning method and, on the other hand, confirm some previously made numerical predictions. The obtained results can be utilized as a practical guide for designing microresonator-based devices to capable of generating a particular soliton state.
