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Demonstration of holographically fabricated large grating couplers for integrated circular beam delivery

Demonstration of holographically fabricated large grating couplers for integrated circular beam delivery
Demonstration of holographically fabricated large grating couplers for integrated circular beam delivery
We present the use of holographic UV writing to fabricate 2D grating couplers in doped planar silica-on-silicon, enabling the creation of large (~1 cm) and efficient circular beam delivery into free space. Our fabrication process inscribes a channel waveguide with in-plane 60° blazed grating to expand a fibre-coupled beam within a planar core layer, followed by an out-of-plane 45° blazed grating to couple light out of the substrate. Our out-of-plane gratings are fabricated using a modified interferometric arrangement with a prism and index matching water layer, the arrangement and latest results will be presented here.
Ahmed, Salman
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Bannerman, Rex
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Field, James W
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Ko, Dong-Woo
aae111cb-4988-4b76-9ab2-e077d36538b3
Horak, Peter
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Holmes, Christopher
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Smith, Peter G.R.
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Gow, Paul C.
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Gawith, Corin
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Gates, James
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Ahmed, Salman
2a627fc7-aca4-4380-85d8-90349bbf9e2b
Bannerman, Rex
7f7d5c3e-8e5d-45d5-8fd7-8d1511330e08
Field, James W
87ce1146-333d-489c-839d-b6f654049abc
Ko, Dong-Woo
aae111cb-4988-4b76-9ab2-e077d36538b3
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Holmes, Christopher
16306bb8-8a46-4fd7-bb19-a146758e5263
Smith, Peter G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Gow, Paul C.
193394b1-fe2d-41de-a9aa-6de7e5925b18
Gawith, Corin
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Gates, James
b71e31a1-8caa-477e-8556-b64f6cae0dc2

Ahmed, Salman, Bannerman, Rex, Field, James W, Ko, Dong-Woo, Horak, Peter, Holmes, Christopher, Smith, Peter G.R., Gow, Paul C., Gawith, Corin and Gates, James (2024) Demonstration of holographically fabricated large grating couplers for integrated circular beam delivery. Photonics West 2024: Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVII, Moscone Center, San Francisco, United States. 27 Jan - 01 Feb 2024.

Record type: Conference or Workshop Item (Paper)

Abstract

We present the use of holographic UV writing to fabricate 2D grating couplers in doped planar silica-on-silicon, enabling the creation of large (~1 cm) and efficient circular beam delivery into free space. Our fabrication process inscribes a channel waveguide with in-plane 60° blazed grating to expand a fibre-coupled beam within a planar core layer, followed by an out-of-plane 45° blazed grating to couple light out of the substrate. Our out-of-plane gratings are fabricated using a modified interferometric arrangement with a prism and index matching water layer, the arrangement and latest results will be presented here.

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More information

Published date: 30 January 2024
Venue - Dates: Photonics West 2024: Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVII, Moscone Center, San Francisco, United States, 2024-01-27 - 2024-02-01
Related URLs:
Learn more about Zepler Institute for Photonics and Nanoelectronics research Learn more about Zepler Institute for Photonics and Nanoelectronics research

Identifiers

Local EPrints ID: 487253
URI: http://eprints.soton.ac.uk/id/eprint/487253
PURE UUID: 6f75e0d9-eb57-4a67-afde-1bad93a6cb47
ORCID for Salman Ahmed: ORCID iD orcid.org/0000-0003-0731-5390
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764
ORCID for Christopher Holmes: ORCID iD orcid.org/0000-0001-9021-3760
ORCID for Peter G.R. Smith: ORCID iD orcid.org/0000-0003-0319-718X
ORCID for Paul C. Gow: ORCID iD orcid.org/0000-0002-3247-9082
ORCID for Corin Gawith: ORCID iD orcid.org/0000-0002-3502-3558
ORCID for James Gates: ORCID iD orcid.org/0000-0001-8671-5987

Catalogue record

Date deposited: 16 Feb 2024 15:26
Last modified: 06 Mar 2024 02:47

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Contributors

Author: Salman Ahmed ORCID iD
Author: Rex Bannerman
Author: James W Field
Author: Dong-Woo Ko
Author: Peter Horak ORCID iD
Author: Christopher Holmes ORCID iD
Author: Peter G.R. Smith ORCID iD
Author: Paul C. Gow ORCID iD
Author: Corin Gawith ORCID iD
Author: James Gates ORCID iD

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