Analysis of the Optical Coupling Between GaSb Diode Lasers and Passive Waveguides: A Step Toward Monolithic Integration on Si Platforms
Résumé
We simulate the optical coupling between 2.3 µm GaSb-based diode lasers (DLs) epitaxially grown on on-axis silicon (001) and passive waveguides in the butt-coupling geometry. 3D FDTD simulations reveal how the optical coupling is affected by the air gap between the laser cavity and the waveguide that arises from the laser etched-facet definition. We also model alternative approaches consisting in filling the gap with higher-refractive index materials transparent in the mid-infrared window. Finally, because of their fabrication flexibility, we propose to implement polymeric waveguides in order to achieve improved coupling performances.
Domaines
Optique / photonique
Fichier principal
2022 IEEE Phton. J. Analysis_of_the_optical_coupling_UM_POLIBA_MTU.pdf (929.75 Ko)
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Origine : Publication financée par une institution