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US 2026/0147204 A1Published application
Aberration correction of optical phased arrays
AssigneeAnalog Photonics LLC
InventorsPeter Nicholas Russo, Ehsan Shah Hosseini, Christopher Vincent Poulton, Erman Timurdogan, Diedrik Vermeulen, Michael Robert Watts, Michael J. Whitson
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Abstract
Aspects of the present disclosure describe systems, methods, and structures for aberration correction of optical phased arrays that employ a corrective optical path difference (OPD) in the near-field of an OPA to correct or cancel out aberrations in emitted beams of the OPA including those reaching far-field distances by generating a spatially-varying OPD across the aperture of the OPA that is substantially equal and opposite to an equivalent OPD of the aberration(s).
Claims1
An apparatus comprising:
- an optical distribution network;
- a first optical phased array (OPA) structure comprising
- an array of optical antennas defining an overall aperture of the first OPA structure, where (1) two or more of the optical antennas each comprises a waveguide and one or more antenna emitter structures, and (2) at least two of the waveguides receive light from the optical distribution network, and
- an array of phase shifters positioned outside of the overall aperture, where each of the phase shifters is optically coupled to the optical distribution network, and at least one of the waveguides of the optical antennas;
- and
- one or more corrective elements overlying at least a portion of the array of optical antennas, where the one or more corrective elements are configured to:
- cover a plurality of the optical antennas in the array of optical antennas, and
- apply an optical path difference (OPD) to light emitted from or received into the antenna emitter structures, where the OPD is spatially-varying across the portion of the array of optical antennas.
5 more elements
Dependencies are inferred from the claim text.