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Co-optimizing grating couplers for hybrid integration of InP and SOI photonic platforms

Articolo
Data di Pubblicazione:
2018
Abstract:
Grating couplers are widely used optical interfaces in integrated photonics, especially on the Silicon-On-Insulator (SOI) platform. Their design has been optimized for coupling light between a Photonic Integrated Circuit (PIC) and a single-mode fiber, a lens for free space transport, or even a second PIC in the same SOI platform. In this work, we co-design matching pairs of grating-couplers on distinct SOI and InP photonic platforms for optimized PIC-to-PIC coupling. By matching the scattering strengths of the two grating-couplers, we show that a PIC-to-PIC insertion loss of 3dB can be achieved. We also investigate how the design parameters impact the coupling efficiency and the bandwidth, ending up with a tolerance analysis. The proposed coupling approach between two different waveguide materials has prospective applications for the hybrid-integration of SOI and InP photonic platforms for communication technologies.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Grating couplers, photonic integrated circuits, InP and SOI platforms
Elenco autori:
Passoni, Marco; Floris, F.; Hwang, H. Y.; Zagaglia, L.; Carroll, L.; Andreani, L. C.; O’Brien, P.
Autori di Ateneo:
ANDREANI LUCIO
FLORIS FRANCESCO
Link alla scheda completa:
https://iris.unipv.it/handle/11571/1230926
Pubblicato in:
AIP ADVANCES
Journal
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URL

https://doi.org/10.1063/1.5046164
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