A photonic integrated circuit and a three-dimensional laser Doppler vibrometer comprising the same Ghent University
A photonic integrated circuit (PIC) comprising a splitter to split a laser beam into a measurement signal and a reference signal; a phase-amplitude modulator array coupled to a transmitting array to generate, from the measurement signal, at least three output signals to be directed to a single target location, each output signal having a different direction and a different carrier frequency; and a receiving array comprising at least three receiving antennas to receive a reflection signal from a different receiving direction. Each output signal is assigned with a different carrier frequency, ...