Hollow-core fibers with ultralow loss in the ultraviolet range and sub-thermodynamic equilibrium surface-roughness
Jonas H. Os\'orio, Foued Amrani, Fr\'ed\'eric Delahaye, Ali Dhaybi,, Kostiantyn Vasko, Gilles Tessier, Fabio Giovanardi, Luca Vincetti, Beno\^it, Debord, Fr\'ed\'eric G\'er\^ome, Fetah Benabid
TL;DR
This paper presents hollow-core fibers with ultralow optical loss in the ultraviolet spectrum, achieved by reducing surface roughness below thermodynamic limits, enabling improved UV light transmission.
Contribution
The study demonstrates a novel fabrication technique that produces hollow-core fibers with surface roughness below thermodynamic limits, significantly reducing optical loss in the UV range.
Findings
Record low loss at 290 nm (50.0 dB/km)
Surface roughness below thermodynamic limit
Effective UV light guidance in hollow-core fibers
Abstract
We report on hollow-core fibers displaying rms core roughness under the surface capillary waves thermodynamic limit and record loss in the short-wavelength range (50.0 dB/km at 290 nm, 9.7 dB/km at 369 nm, 5.0 dB/km at 480 nm, 0.9 dB/km at 558 nm, 1.8 dB/km at 719 nm).
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Taxonomy
TopicsAdvanced Fiber Optic Sensors · Photonic Crystal and Fiber Optics · Optical Network Technologies