Published January 14, 2024 | Version v1
Journal article Open

Apodized Slanted Teeth Grating Couplers for LiDAR Applications


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◦x42.8◦. 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◦, further enhancing sensing resolution.



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DRIVE-In – Integrated Photonics for the next generation of autonomous Vehicles using InP technologies 860763
European Commission