Photonic chip and photonic component integrating such a chip

Abstract

A photonic chip includes at least one photonic circuit comprising at least one laser source for providing a first radiation, referred to as local oscillator, to an optical mixer and for providing an emission radiation to a coupling device, the local oscillator and the emission radiation having a predetermined polarization. The coupling device is configured to propagate in free space, from a measuring surface, the emission radiation in the form of an emission light beam, to receive, in return, on the measuring surface a reflected light beam and to guide it toward the optical mixer as reflected radiation having the predetermined polarization. The optical mixer generates a measurement signal by interferometric pulse of the local oscillator and the reflected radiation. The present disclosure also relates to an optical component comprising such a photonic chip.