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Opt Express. 2016 Mar 21;24(6):5911-7. doi: 10.1364/OE.24.005911.

Single-ring hollow core optical fibers made by glass billet extrusion for Raman sensing.


We report the fabrication of the first extruded hollow core optical fiber with a single ring of cladding holes, and its use in a chemical sensing application. These single suspended ring structures show antiresonance reflection optical waveguiding (ARROW) features in the visible part of the spectrum. The impact of preform pressurization on the geometry of these fibers is determined by the size of the different hole types in the preform. The fibers are used to perform Raman sensing of methanol, demonstrating their potential for future fiber sensing applications.


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