Numerical investigation of turnkey soliton generation in an organically coated microresonator

Kerr soliton frequency-comb generation in microresonators has attracted extensive interest since soliton microcombs offer the potential for integration and can be widely used in many fields, such as spectroscopy, communications, precision metrology, sensing, etc. Here, the mechanism of turnkey soliton generation in a microresonator with an organic material coating is illustrated and investigated in both analytical and numerical ways. In particular, based on the thermal curve under a stable state and soliton power from analytical analysis, the turnkey soliton generation regime is calculated and proved by coupled equations with the split-step Fourier method. In addition, the physical parameters of the hybrid modes in the coated resonators are studied, and a suitable design is given in this paper. This research will be helpful for increasing the accessibility of Kerr solitons and make them easier to integrate.