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arXiv · 2401.08515

Apodized Slanted Grating Couplers for LiDAR Applications

Vahram Voskerchyan·Francis·Tian·Francisco M. Soares·David Alvarez Outerelo·Francisco J. Diaz-Otero
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Abstract

Solid state LiDAR systems traditionally rely on costly active components for efficient beam scanning. In this study, we propose a cost-effective, purely passive steering approach using apodized slanted grating couplers. Through apodization, we achieve a uniform upward emission profile and enhanced upward transmission. Theoretical calculations indicate successful steering of 91.5$^\circ$x42.8$^\circ$. Experimental results closely match theoretical predictions, validating the capabilities of our passive steering concept. Additionally, the grating couplers, with a length of 3mm, enable a farfield FWHM of 0.026$^\circ$, further enhancing sensing resolution.

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Vahram Voskerchyan, Francis, Tian, Francisco M. Soares, David Alvarez Outerelo, Francisco J. Diaz-Otero. 2024-01-16. Apodized Slanted Grating Couplers for LiDAR Applications. https://arxiv.org/abs/2401.08515

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