A resonator fiber optic gyroscope, RFOG, , comprising: a master laser configured to emit a reference optical signal; a first slave laser configured to emit a first optical signal, the first slave laser responsive to the reference optical signal through a first optical phase lock loop ; a second slave laser configured to emit a second optical signal, the second slave laser responsive to the reference optical signal through a second optical phase lock loop ; a reference resonator in optical communication with the master laser and configured to receive the reference optical signal, the reference resonator comprising a first fiber optic coil having a first cavity length; a gyro resonator in optical communication with the first slave laser and the second slave laser, the gyro resonator configured to receive the first and second optical signals, the gyro resonator comprising a second fiber optic coil having a second cavity length that is longer than the first cavity length of the first fiber optic coil, wherein the first optical signal from the first slave laser is a clockwise, CW, optical signal in the gyro resonator, and the second optical signal from the second slave laser is a counter-clockwise, CCW, optical signal in the gyro resonator; a gyro electronics unit in operative communication with each of the master laser, the first slave laser, the second slave laser, the reference resonator, and the gyro resonator; and a CW resonance tracking electronics module and a CCW resonance tracking electronics module that are in the gyro electronics unit, and are operatively coupled to the gyro resonator; wherein the reference resonator is operatively coupled to the CW resonance tracking electronics module to adjust a resonance frequency of the reference resonator to substantially correspond with a resonance frequency of the gyro resonator, such that the reference resonator has an operating frequency that substantially tracks with an operating frequency of the gyro resonator. a master laser configured to emit a reference optical signal; a first slave laser configured to emit a first optical signal, the first slave laser responsive to the reference optical signal through a first optical phase lock loop ; a second slave laser configured to emit a second optical signal, the second slave laser responsive to the reference optical signal through a second optical phase lock loop ; a reference resonator in optical communication with the master laser and configured to receive the reference optical signal, the reference resonator comprising a first fiber optic coil having a first cavity length; a gyro resonator in optical communication with the first slave laser and the second slave laser, the gyro resonator configured to receive the first and second optical signals, the gyro resonator comprising a second fiber optic coil having a second cavity length that is longer than the first cavity length of the first fiber optic coil, wherein the first optical signal from the first slave laser is a clockwise, CW, optical signal in the gyro resonator, and the second optical signal from the second slave laser is a counter-clockwise, CCW, optical signal in the gyro resonator; a gyro electronics unit in operative communication with each of the master laser, the first slave laser, the second slave laser, the reference resonator, and the gyro resonator; and a CW resonance tracking electronics module and a CCW resonance tracking electronics module that are in the gyro electronics unit, and are operatively coupled to the gyro resonator; wherein the reference resonator is operatively coupled to the CW resonance tracking electronics module to adjust a resonance frequency of the reference resonator to substantially correspond with a resonance frequency of the gyro resonator, such that the reference resonator has an operating frequency that substantially tracks with an operating frequency of the gyro resonator. <EOS>