An optical gyroscope comprising: an optical switch adapted to deliver a laser beam to a first path during a first half of a period and to a second path during a second half of the period; a first optical ring configured to deliver a first portion of the beam received from the first path in a counter clockwise direction during the first half of the period, and further to deliver a first portion of the beam received from the second path in a clockwise direction during the second half of the period; a second optical ring configured to deliver a second portion of the beam received from the first path in a clockwise direction during the first half of the period, and further to deliver a second portion of the beam received from the second path in a counter clockwise direction during the second half of the period; a first photodetector adapted to receive the beams delivered by the first and second optical rings during the second half of the period; a second photodetector adapted to receive the beams delivered by the first and second optical rings during the first half of the period; a first trans-impedance amplifier adapted to amplify an output signal of the first photodetector by a first amplification value; a second trans-impedance amplifier adapted to amplify an output signal of the second photodetector by a second amplification value; a first phase modulator adapted to delay a beam received or delivered by the first optical ring by a first predefined phase value; and a signal combiner adapted to generate a first signal representative of a combined output of the first and second trans-impedance amplifiers. an optical switch adapted to deliver a laser beam to a first path during a first half of a period and to a second path during a second half of the period; a first optical ring configured to deliver a first portion of the beam received from the first path in a counter clockwise direction during the first half of the period, and further to deliver a first portion of the beam received from the second path in a clockwise direction during the second half of the period; a second optical ring configured to deliver a second portion of the beam received from the first path in a clockwise direction during the first half of the period, and further to deliver a second portion of the beam received from the second path in a counter clockwise direction during the second half of the period; a first photodetector adapted to receive the beams delivered by the first and second optical rings during the second half of the period; a second photodetector adapted to receive the beams delivered by the first and second optical rings during the first half of the period; a first trans-impedance amplifier adapted to amplify an output signal of the first photodetector by a first amplification value; a second trans-impedance amplifier adapted to amplify an output signal of the second photodetector by a second amplification value; a first phase modulator adapted to delay a beam received or delivered by the first optical ring by a first predefined phase value; and a signal combiner adapted to generate a first signal representative of a combined output of the first and second trans-impedance amplifiers.