An improved synthetic heterodyne demodulator circuit. The circuit is arranged to accept the output signal s(t) from an interferometric sensor with large amplitude sinusoidal phase modulation (phase-generated carrier). The phase modulation amplitude is adjusted such that a selected pair of odd and even...http://www.google.com/patents/US5212825?utm_source=gb-gplus-sharePatent US5212825 - Synthetic heterodyne demodulator circuit
