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arXiv · 2310.07639

Guidance of ultraviolet light down to 190 nm in a hollow-core optical fibre

Robbie Mears·Kerrianne Harrington·William J. Wadsworth·Jonathan C. Knight·James M. Stone·Tim A. Birks
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Abstract

We report an anti-resonant hollow core fibre with ultraviolet transmission down to 190 nm, covering the entire UV-A, UV-B and much of the UV-C band. Guidance from 190 - 400 nm is achieved apart for a narrow high loss resonance band at 245 - 265 nm. The minimum attenuation is 0.13 dB/m at 235 nm and 0.16 dB/m at 325 nm. With an inscribed core diameter of ~ 12 $μ$m, the fibre's bend loss at 325 nm was 0.22 dB per turn for a bend radius of 3 cm at 325 nm.

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Robbie Mears, Kerrianne Harrington, William J. Wadsworth, Jonathan C. Knight, James M. Stone, Tim A. Birks. 2024-02-24. Guidance of ultraviolet light down to 190 nm in a hollow-core optical fibre. https://arxiv.org/abs/2310.07639

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