Optical hetero (homo) dyne for coherent communication. Phase Modulated Optical signal is mixed with local oscillator (Continuous Laser). Baseband signal is demodulated by Balanced detector.
optical-heterodyne-detection.mp4
Original signal. Real part of Electric field. Real part of Electric field. Generated Signal.
optical-homodyne-detection
Original signal Real part of Electric field. Real part of Electric field. Generated Signal.