High-efficiency broadband grating out-coupler for thick silicon waveguides with a tuned SiGe layer

High-efficiency broadband grating out-coupler for thick silicon waveguides with a tuned SiGe layer

We design a novel grating out-coupler while maintaining a Gaussian-shaped far-field output. The approach is based on the patterning of a grating in a SiGe layer on the top surface of a 3-μm-thick Si waveguide. The grating aims at coupling the guided signal into a beam vertically out from the surface...

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Bibliographic Details
Main Authors: Muntaha Sidra Tul, Doughan Isaac, Cherchi Matteo, Roussey Matthieu, Aalto Timo
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:Journal of the European Optical Society-Rapid Publications
Subjects:
silicon germanium
grating out-coupler
long device
broad-band
lidar applications
Online Access:https://jeos.edpsciences.org/articles/jeos/full_html/2025/02/jeos20250032/jeos20250032.html
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