A simulation model is setup to analyze the reciprocal noises reduction and the improvement of the gyro bandwidth of the single closed-loop and double closed-loop resonator micro optic gyro (R-MOG). Simulation results show that the double closed-loop R-MOG can inhibit the reciprocal noises and enhance the output bandwidth. Furthermore, the double closed-loop R-MOG can improve the gyro linearity. Based on the work mentioned above, an experimental system of the double closed-loop R-MOG is set up. The bias stability and gyro output are tested. Experimental results show that the bias stability of the R-MOG is 0.53 °/s over an hour and the linearity of the R-MOG is 99.995% over the range of ±1000 °/s.