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Record-efficiency bi-layer grating couplers for thin-film SiN photonics

Record-efficiency bi-layer grating couplers for thin-film SiN photonics
Record-efficiency bi-layer grating couplers for thin-film SiN photonics
We report the design, fabrication, and experimental characterization of a bilayer grating coupler on a 150 nm thick SiN photonic platform, achieving a record coupling efficiency of -1.8 dB without the use of any back-reflector.
Optica Publishing Group
Di Croce, Francesca
4029729f-5a59-44f7-afac-dd9be0fc1f82
Pennoni, Anna
19b60fb1-039c-41d5-a6c1-5893859bdf75
Vitali, Valerio
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Dominguez Bucio, Thalia
83b57799-c566-473c-9b53-92e9c50b4287
Liu, Hao
ef7502c1-75d1-47de-907e-3a3749f6e68b
Cristiani, Ilaria
ca05c320-279d-4b2a-af71-c506b3d20822
Gardes, Frederic
7a49fc6d-dade-4099-b016-c60737cb5bb2
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Lacava, Cosimo
f766dc0a-5a67-4656-87aa-f7f35c4a9ab6
Di Croce, Francesca
4029729f-5a59-44f7-afac-dd9be0fc1f82
Pennoni, Anna
19b60fb1-039c-41d5-a6c1-5893859bdf75
Vitali, Valerio
9d6bfb8c-2e4a-462a-a4d5-03a92f72bb2b
Dominguez Bucio, Thalia
83b57799-c566-473c-9b53-92e9c50b4287
Liu, Hao
ef7502c1-75d1-47de-907e-3a3749f6e68b
Cristiani, Ilaria
ca05c320-279d-4b2a-af71-c506b3d20822
Gardes, Frederic
7a49fc6d-dade-4099-b016-c60737cb5bb2
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Lacava, Cosimo
f766dc0a-5a67-4656-87aa-f7f35c4a9ab6

Di Croce, Francesca, Pennoni, Anna, Vitali, Valerio, Dominguez Bucio, Thalia, Liu, Hao, Cristiani, Ilaria, Gardes, Frederic, Petropoulos, Periklis and Lacava, Cosimo (2025) Record-efficiency bi-layer grating couplers for thin-film SiN photonics. In Record-Efficiency Bi-Layer Grating Couplers for Thin-Film SiN Photonics. Optica Publishing Group. 2 pp . (doi:10.1364/CLEO_SI.2025.SS192_3).

Record type: Conference or Workshop Item (Paper)

Abstract

We report the design, fabrication, and experimental characterization of a bilayer grating coupler on a 150 nm thick SiN photonic platform, achieving a record coupling efficiency of -1.8 dB without the use of any back-reflector.

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Published date: 2025

Identifiers

Local EPrints ID: 508284
URI: http://eprints.soton.ac.uk/id/eprint/508284
PURE UUID: 296b1fa9-2397-4dac-a7d2-69a46ef8010d
ORCID for Thalia Dominguez Bucio: ORCID iD orcid.org/0000-0002-3664-1403
ORCID for Frederic Gardes: ORCID iD orcid.org/0000-0003-1400-3272
ORCID for Periklis Petropoulos: ORCID iD orcid.org/0000-0002-1576-8034

Catalogue record

Date deposited: 15 Jan 2026 18:18
Last modified: 16 Jan 2026 02:56

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Contributors

Author: Francesca Di Croce
Author: Anna Pennoni
Author: Valerio Vitali
Author: Thalia Dominguez Bucio ORCID iD
Author: Hao Liu
Author: Ilaria Cristiani
Author: Frederic Gardes ORCID iD
Author: Periklis Petropoulos ORCID iD
Author: Cosimo Lacava

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