Stability enhanced resonator fiber optic gyro (RFOG)

A resonator fiber optic gyroscope (RFOG), comprising:

• a fiber optic resonator;
• a master laser that is configured to transmit a light wave with a frequency that is locked to a resonant frequency of the fiber optic resonator;
• a first slave laser that is configured to transmit a light wave at a frequency that is phase locked to the frequency of the master laser in a first optical phase lock loop at a first offset frequency to provide a clockwise signal (CW) to the fiber optic resonator;
• a second slave laser that is configured to transmit a light wave at a frequency that is phase locked to the frequency of the master laser in a second optical phase lock loop at a second offset frequency to provide a counterclockwise signal (CCW) to the fiber optic resonator;
• and
• a Pound-Drever-Hall (PDH) stabilization loop that is configured to lock the master laser to the resonant frequency, and a summing junction coupled in the PDH stabilization loop that is configured to receive a common modulation signal that has a frequency that is low relative to a linewidth of the fiber optic resonator, and causes the first slave laser and the second slave laser to have an optical frequency modulation component at the frequency of the common modulation signal.