Laser machining of micro-channels in hollow-core optical fibers for improved gas exchange
Laser machining of micro-channels in hollow-core optical fibers for improved gas exchange
Hollow-core optical fibres (HCFs) are a promising platform for diverse applications including telecommunications, laser power delivery, and sensing. To maximize optical performance of HCFs, control of gas composition and pressure within the core is advantageous. Furthermore, HCFs can enable high-sensitivity gas detection through enhancing the gas-light interaction length. Yet, conventional fibre gas filling approaches rely on fibers end filling, which gives an impractically slow response for long lengths as filling time scales quadratically with length [1]. Introducing micro-channels by laser-assisted micro-processing the fibre side allows gas to enter at multiple points [2]. Studies show feasibility in limited fiber designs [3], but for practical deployment further development is required to understand the impact of micro-channel size, shape, and distributions on fiber attenuation and how microstructure geometry and jacket thickness affect the ablation process.
Hollow Core Optical Fibres, gas sensing, laser ablation
Lee, Timothy
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Biondi V., Andres M.
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Kelly, Thomas W.
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Beresna, Martynas
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Davidson, Ian A.
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Slavík, Radan
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15 August 2025
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Biondi V., Andres M.
11268d9e-6c55-4297-b317-db0d980e2f9b
Kelly, Thomas W.
64bf9b49-b287-4d23-8809-a2627f8d4bf2
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Davidson, Ian A.
b685f949-e9e4-4e6b-9a59-36739de06a61
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Lee, Timothy, Biondi V., Andres M., Kelly, Thomas W., Beresna, Martynas, Davidson, Ian A. and Slavík, Radan
(2025)
Laser machining of micro-channels in hollow-core optical fibers for improved gas exchange.
In 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
IEEE.
1 pp
.
(doi:10.1109/CLEO/Europe-EQEC65582.2025.11109678).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Hollow-core optical fibres (HCFs) are a promising platform for diverse applications including telecommunications, laser power delivery, and sensing. To maximize optical performance of HCFs, control of gas composition and pressure within the core is advantageous. Furthermore, HCFs can enable high-sensitivity gas detection through enhancing the gas-light interaction length. Yet, conventional fibre gas filling approaches rely on fibers end filling, which gives an impractically slow response for long lengths as filling time scales quadratically with length [1]. Introducing micro-channels by laser-assisted micro-processing the fibre side allows gas to enter at multiple points [2]. Studies show feasibility in limited fiber designs [3], but for practical deployment further development is required to understand the impact of micro-channel size, shape, and distributions on fiber attenuation and how microstructure geometry and jacket thickness affect the ablation process.
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More information
Published date: 15 August 2025
Keywords:
Hollow Core Optical Fibres, gas sensing, laser ablation
Identifiers
Local EPrints ID: 505382
URI: http://eprints.soton.ac.uk/id/eprint/505382
PURE UUID: c79d7073-0f66-4f42-8328-4556228a8e4d
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Date deposited: 07 Oct 2025 16:53
Last modified: 08 Oct 2025 02:13
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Contributors
Author:
Timothy Lee
Author:
Andres M. Biondi V.
Author:
Thomas W. Kelly
Author:
Martynas Beresna
Author:
Ian A. Davidson
Author:
Radan Slavík
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