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Direct UV written Bragg gratings in lithium niobate ridge waveguides for analysis of process uniformity

Direct UV written Bragg gratings in lithium niobate ridge waveguides for analysis of process uniformity
Direct UV written Bragg gratings in lithium niobate ridge waveguides for analysis of process uniformity
We present our research on utilizing weak Bragg grating reflectors to assess the uniformity of zinc-doped lithium niobate ridge waveguides, aiming to optimize frequency conversion. These gratings are fabricated through ablation using a pulsed 213nm laser within a phase-controlled interferometric system, providing sub-nanometer period accuracy. By employing gratings we spectrally and spatially characterize the modal properties of our waveguides, enabling direct analysis of process variability. Through this analysis, we aim to gain a deeper understanding of the effective index variation in periodically poled lithium niobate (PPLN) waveguides, with the ultimate goal of reducing it and improving frequency conversion.
Bannerman, Rex
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Field, James
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Ahmed, Salman
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Gow, Paul C.
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Churchill, Glenn
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Gates, James
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Smith, Peter G R
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Bannerman, Rex
7f7d5c3e-8e5d-45d5-8fd7-8d1511330e08
Field, James
df955b32-3fe1-4aca-866f-95603a4c70f7
Ahmed, Salman
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Gow, Paul C.
193394b1-fe2d-41de-a9aa-6de7e5925b18
Churchill, Glenn
5933a331-fba3-444b-8352-273112c3d6a6
Gates, James
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Smith, Peter G R
8979668a-8b7a-4838-9a74-1a7cfc6665f6

Bannerman, Rex, Field, James, Ahmed, Salman, Gow, Paul C., Churchill, Glenn, Gates, James and Smith, Peter G R (2024) Direct UV written Bragg gratings in lithium niobate ridge waveguides for analysis of process uniformity. 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 our research on utilizing weak Bragg grating reflectors to assess the uniformity of zinc-doped lithium niobate ridge waveguides, aiming to optimize frequency conversion. These gratings are fabricated through ablation using a pulsed 213nm laser within a phase-controlled interferometric system, providing sub-nanometer period accuracy. By employing gratings we spectrally and spatially characterize the modal properties of our waveguides, enabling direct analysis of process variability. Through this analysis, we aim to gain a deeper understanding of the effective index variation in periodically poled lithium niobate (PPLN) waveguides, with the ultimate goal of reducing it and improving frequency conversion.

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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

Identifiers

Local EPrints ID: 487252
URI: http://eprints.soton.ac.uk/id/eprint/487252
PURE UUID: c6a30971-2f03-4a5c-8eda-b56ab9f76def
ORCID for James Field: ORCID iD orcid.org/0000-0002-0985-6062
ORCID for Salman Ahmed: ORCID iD orcid.org/0000-0003-0731-5390
ORCID for Paul C. Gow: ORCID iD orcid.org/0000-0002-3247-9082
ORCID for Glenn Churchill: ORCID iD orcid.org/0000-0001-7621-7618
ORCID for James Gates: ORCID iD orcid.org/0000-0001-8671-5987
ORCID for Peter G R Smith: ORCID iD orcid.org/0000-0003-0319-718X

Catalogue record

Date deposited: 16 Feb 2024 15:23
Last modified: 06 Mar 2024 02:50

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Contributors

Author: Rex Bannerman
Author: James Field ORCID iD
Author: Salman Ahmed ORCID iD
Author: Paul C. Gow ORCID iD
Author: Glenn Churchill ORCID iD
Author: James Gates ORCID iD
Author: Peter G R Smith ORCID iD

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