Rapid resetting and locking method for resonant optical gyroscope

The invention discloses a quick reset locking method of a resonant optical gyroscope, which comprises the following steps: when the actual frequency tuning quantity of a tunable laser exceeds a set frequency reset threshold [fmin, fmax], the gyroscope enters a frequency reset state, the frequency tuning quantity changes f1 in the direction opposite to the threshold exceeding direction, and then changes continuously by taking f2 as a step length, and after the output frequency of the laser enters another forward feedback region within the set frequency reset threshold range, proportionally feeding back the frequency tuning amount according to the demodulation output, and after the output frequency of the laser is close to the resonant frequency of the resonant cavity, finishing resetting and entering the stable closed-loop state again. According to the invention, the reset time is greatly reduced, so that the resonant optical gyroscope can effectively work for a long time, and the problem of overlong reset tim