OPTICAL GYROSCOPE PDH OFFSET COMPENSATION

A Pound-Drever-Hall (PDH) offset servo circuit is configured to compensate for offset error identified from a received signal in an optical gyroscope. The PDH offset servo circuit determines offset error information from a quadrature-demodulated counterpropagating signal in the optical gyroscope, and uses the offset error information to generate a compensated PDH error signal. The compensated PDH error signal can be used to adjust the setpoint of the PDH loop circuitry, thereby enabling the PDH loop circuitry to generate a control signal to a laser that controls the frequency output of the laser with reduced offset error.