Fig. 1. (a) D_int of TE₀₀ mode with different ring widths; (b) Difference between the resonant frequency of TE₀₀ and TE₁₀ with different ring widths

Fig. 2. (a) Scanning electron microscopy(SEM) of the overall structure of the microring; (b) SEM of the coupled positions of the waveguide and microring; (c) SEM of the sidewall of the waveguide tilted 30°

Fig. 3. (a) Transmission spectrum of the TE₀₀ and TE₁₀ in the wavelength range from 1540 nm to 1570 nm; (b) Zoomed-in region of the two close resonances near 1550 nm

Fig. 4. Transmission spectrum of TE₀₀ and TE₁₀ near 1550 nm at different powers (20-430 mW)

Fig. 5. When the pump power is 350 mW, (a) the spectral evolution process from i to v is obtained by increasing the pump wavelength; (b) Schematic of the power of pump transmission; (c) Measurements of the beat frequency noise of the two soliton combs and the MI state comb, and the background noise of PD