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 u...

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Bibliographic Details
Published in:Optical and quantum electronics 2024-06, Vol.56 (7), Article 1269
Main Authors: Voskerchyan, Vahram, Tian, Yu, Soares, Francisco M., Outerelo, David Álvarez, Diaz-Otero, Francisco J.
Format: Article
Language:English
Subjects:
Apodization
Characterization and Evaluation of Materials
Computer Communication Networks
Couplers
Electrical Engineering
Far fields
Lasers
Lidar
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Steering
Citations: Items that this one cites
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Summary: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 ∘ × 42 . 8 ∘ . Experimental results closely match theoretical predictions, validating the capabilities of our passive steering concept. Additionally, the grating couplers, with a length of 3 mm, enable a farfield FWHM of 0.026 ∘ , further enhancing sensing resolution.
ISSN:1572-817X
0306-8919
1572-817X
DOI:10.1007/s11082-024-07132-w