Fig. 1. Schematic diagram of Brillouin fiber ring resonator propagation

Fig. 2. Schematic diagram of Brillouin threshold

Fig. 3. Transfer function of phase noise

Fig. 4. Experimental device of Brillouin ring resonator stabilization system and frequency measurement

Fig. 5. Phase noise measurement device based on delay self-heterodyne method

Fig. 6. Output light intensity curve of fiber ring resonator

Fig. 7. Frequency difference between backward Stokes light and pump light

Fig. 8. Threshold test results of stimulated Brillouin scattering

Fig. 9. Frequency noise measurement results