Fast beamforming algorithm for optical phased array beam scanning LiDAR

Jinung Jin; Eun-Su Lee; Kwon-Wook Chun; Min-Cheol Oh

doi:10.1117/12.2608452

5 March 2022 Fast beamforming algorithm for optical phased array beam scanning LiDAR

Jinung Jin, Eun-Su Lee, Kwon-Wook Chun, Min-Cheol Oh

Proceedings Volume PC12004, Integrated Optics: Devices, Materials, and Technologies XXVI; PC120040O (2022) https://doi.org/10.1117/12.2608452
Event: SPIE OPTO, 2022, San Francisco, California, United States

Conference Poster

Abstract

The phase error imposed on the optical phased arrays (OPAs) used for the beam scanner of LiDAR is unavoidable due to the minute dimensional fluctuations that occur during the waveguide manufacturing process. In this study, a fast-reacting beamforming algorithm is developed based on the rotating element vector method for compensating the phase error. The proposed algorithm is highly suitable for the OPA devices comprised of polymer waveguides, allowing each phase modulator to be controlled independently. Additionally using the least square approximation, the beamforming time is shortened to 16 seconds for a 32-channel polymer waveguide OPA device.

Citation Download Citation

Jinung Jin, Eun-Su Lee, Kwon-Wook Chun, and Min-Cheol Oh "Fast beamforming algorithm for optical phased array beam scanning LiDAR", Proc. SPIE PC12004, Integrated Optics: Devices, Materials, and Technologies XXVI, PC120040O (5 March 2022); https://doi.org/10.1117/12.2608452

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