Measurement of radiation-induced attenuation in visible-guiding hollow core optical fibres
Measurement of radiation-induced attenuation in visible-guiding hollow core optical fibres
Hollow core optical fibres (HCFs) have shown exceptional radiation hardness, characterised by low or negligible radiation-induced attenuation (RIA) [1], [2]. As such, HCFs are a promising candidate for fibre requirements in harsh environments such as future fusion facilities and space. The observed low RIA is due to the extremely low light-glass overlap, as the light guided in a HCF is >99.9% in gas (usually air), rather than glass. Yet, a recent study highlighted that the impact of irradiation on the gas within the fibre should not be neglected [1]; absorption signatures of radiolytically generated nitric acid were recorded in a HCF which had been subjected to high levels of gamma irradiation. As all studies on the effect of radiation on the performance of HCFs have so far almost exclusively focussed on the near-IR spectral range, but as it is known that considerable radiation induced loss can also occur in the UV and visible wavelength range [3], further investigation into the RIA of visible-guiding HCFs is needed. Measurements in the UV-visible are also important given that HCFs have shown great promise at these wavelengths, where they offer significantly improved optical performance as compared to standard all-solid optical fibres [4].
Mulvad, Hans Christian H.
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Davidson, Ian A.
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Kelly, Thomas W.
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Meng, Jing
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Vidiajev, Konstantin
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Hoad, Tim
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Smith, Victoria
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Moghim, Taraneh B.
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Taranta, Austin
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Jung, Yongmin
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Poletti, Francesco
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Wheeler, Natalie V.
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15 August 2025
Mulvad, Hans Christian H.
b461b05f-88f2-4f28-b20a-e45cf258f456
Davidson, Ian A.
b685f949-e9e4-4e6b-9a59-36739de06a61
Kelly, Thomas W.
64bf9b49-b287-4d23-8809-a2627f8d4bf2
Meng, Jing
9daa2555-30ad-43ed-9993-16412c7f3730
Vidiajev, Konstantin
fac25742-0a65-4e32-ad06-53a59656dd0e
Hoad, Tim
3a826fa9-3b8b-4bf6-9327-2a6622afe8a4
Smith, Victoria
28476cdc-2ce2-4343-8b92-1627e52d4c44
Moghim, Taraneh B.
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Taranta, Austin
bc2e834f-0d85-44a1-a874-8150df1f73d9
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Wheeler, Natalie V.
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Mulvad, Hans Christian H., Davidson, Ian A., Kelly, Thomas W., Meng, Jing, Vidiajev, Konstantin, Hoad, Tim, Smith, Victoria, Moghim, Taraneh B., Taranta, Austin, Jung, Yongmin, Poletti, Francesco and Wheeler, Natalie V.
(2025)
Measurement of radiation-induced attenuation in visible-guiding hollow core optical fibres.
In 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
IEEE.
1 pp
.
(doi:10.1109/CLEO/Europe-EQEC65582.2025.11110121).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Hollow core optical fibres (HCFs) have shown exceptional radiation hardness, characterised by low or negligible radiation-induced attenuation (RIA) [1], [2]. As such, HCFs are a promising candidate for fibre requirements in harsh environments such as future fusion facilities and space. The observed low RIA is due to the extremely low light-glass overlap, as the light guided in a HCF is >99.9% in gas (usually air), rather than glass. Yet, a recent study highlighted that the impact of irradiation on the gas within the fibre should not be neglected [1]; absorption signatures of radiolytically generated nitric acid were recorded in a HCF which had been subjected to high levels of gamma irradiation. As all studies on the effect of radiation on the performance of HCFs have so far almost exclusively focussed on the near-IR spectral range, but as it is known that considerable radiation induced loss can also occur in the UV and visible wavelength range [3], further investigation into the RIA of visible-guiding HCFs is needed. Measurements in the UV-visible are also important given that HCFs have shown great promise at these wavelengths, where they offer significantly improved optical performance as compared to standard all-solid optical fibres [4].
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Published date: 15 August 2025
Venue - Dates:
CLEO/Europe-EQEC 2025, , Munich, Germany, 2025-06-23 - 2025-06-27
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Local EPrints ID: 505662
URI: http://eprints.soton.ac.uk/id/eprint/505662
PURE UUID: 55220a4f-2626-42da-a07d-f531c14744ea
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Date deposited: 15 Oct 2025 16:58
Last modified: 16 Oct 2025 01:48
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Contributors
Author:
Hans Christian H. Mulvad
Author:
Ian A. Davidson
Author:
Thomas W. Kelly
Author:
Jing Meng
Author:
Konstantin Vidiajev
Author:
Tim Hoad
Author:
Victoria Smith
Author:
Taraneh B. Moghim
Author:
Austin Taranta
Author:
Yongmin Jung
Author:
Francesco Poletti
Author:
Natalie V. Wheeler
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