A PHOTONIC INTEGRATED CIRCUIT AND A THREE-DIMENSIONAL LASER DOPPLER VIBROMETER COMPRISING THE SAME

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 targe...

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Bibliographische Detailangaben
Hauptverfasser:	LI, YanLu, BAETS, Roeland
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	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 unique direction and a unique carrier frequency; and a receiving array comprising at least three receiving antennas to receive a reflection signal from a unique receiving direction. Each output signal is assigned with a unique carrier frequency, so that, in the signal processing, any cross-talk can be distinguished in the frequency domain allowing them to be removed and/or recovered. By using this PIC, only one laser source is needed for a 3D LDV, which reduces the volume and product cost of the 3D LDV device.