Ultrafast-laser-inscribed side-scattering optical fibre for germicidal deep-UV delivery

Calum A. Ross; Asta Valanciute; Kev Dhaliwal; Robert R. Thomson

doi:10.1117/12.3001963

13 March 2024 Ultrafast-laser-inscribed side-scattering optical fibre for germicidal deep-UV delivery

Calum A. Ross, Asta Valanciute, Kev Dhaliwal, Robert R. Thomson

Proceedings Volume PC12822, Photonic Diagnosis, Monitoring, Prevention, and Treatment of Infections and Inflammatory Diseases 2024; PC128220Q (2024) https://doi.org/10.1117/12.3001963
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Preventing and managing infections is a key aspect of clinical care. UVC light has well-known germicidal properties, but can also cause DNA mutations in human cells. Recently, reduced mutagenic impact was reported in tissue exposed to deep-UV (DUV) light (180 – 230 nm), which remains bactericidal. For future clinical applications, delivering DUV light onto tissue via optical fibres is of interest. We detail a laser direct-write process for inscribing scattering points in silica optical fibre for efficient side-scattering of transmitted DUV light. We report on the germicidal efficacy of the illuminated fibre for inhibiting bacteria growth, determined by in vitro feasibility assays.

Conference Presentation

Citation Download Citation

Calum A. Ross, Asta Valanciute, Kev Dhaliwal, and Robert R. Thomson "Ultrafast-laser-inscribed side-scattering optical fibre for germicidal deep-UV delivery", Proc. SPIE PC12822, Photonic Diagnosis, Monitoring, Prevention, and Treatment of Infections and Inflammatory Diseases 2024, PC128220Q (13 March 2024); https://doi.org/10.1117/12.3001963

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KEYWORDS

Deep ultraviolet

Optical fibers

Bacteria

Coating

Laser scattering

Light scattering

Light sources

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