Dispersive optical phased array circuit for high-resolution pixelated 2D far-field scanning controlled by a single wavelength variable

Wim Bogaerts; Marcus Dahlem; Sarvagya Dwivedi; Roelof Jansen; Xavier Rottenberg

doi:10.1117/12.2544937

26 February 2020 Dispersive optical phased array circuit for high-resolution pixelated 2D far-field scanning controlled by a single wavelength variable

Wim Bogaerts, Marcus Dahlem, Sarvagya Dwivedi, Roelof Jansen, Xavier Rottenberg

Author Affiliations +

Proceedings Volume 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII; 112841Z (2020) https://doi.org/10.1117/12.2544937
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

We propose a 2D scanning optical phased array circuit that reconciliates the requirements of resolution and range in automotive LiDAR. Using only the wavelength of the laser source to scan in both x and y directions, we generate a discrete pixelated pattern in the far field, with both the required resolution and a sufficiently long Rayleigh range. We start from a 2D dispersive optical phased array consisting of wavelength-dependent grating coupler antennas and long delay lines with sufficient angular resolution, and then combine these into a larger array to achieve the required range specifications.

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Citation Download Citation

Wim Bogaerts, Marcus Dahlem, Sarvagya Dwivedi, Roelof Jansen, and Xavier Rottenberg "Dispersive optical phased array circuit for high-resolution pixelated 2D far-field scanning controlled by a single wavelength variable", Proc. SPIE 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII, 112841Z (26 February 2020); https://doi.org/10.1117/12.2544937

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