OPTOELECTRONIC EMITTER HAVING A PHASE-CONTROLLED ANTENNA ARRAY COMPRISING OPTICAL ANTENNAS SUITABLE FOR EMITTING LIGHT RADIATION ACCORDING TO A PREDEFINED EMISSION PROFILE AND IN A PREDEFINED DIRECTION
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United States of America Patent
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Issued Date -
Jan 23, 2025
app pub date -
Nov 29, 2022
filing date -
Nov 29, 2022
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Abstract
An optical phased array transmitter comprising a plurality of optical antennas each formed by a waveguide and by a diffraction grating located above and at a distance from the waveguide along a vertical axis orthogonal to a main plane. The waveguide there has a width that varies longitudinally according to a first predefined function, and the diffraction grating has an arrangement pitch of periodic structures that varies longitudinally according to a second predefined function. The first and second predefined functions are predefined such that a near-field emission profile of the light radiation emitted by the optical antenna is equal to a predefined target emission profile, and that a local emission angle of the emitted light radiation is equal to a predefined, longitudinally constant target emission angle.
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