READ ME File For 'Extruded tellurite antiresonant hollow core fiber for Mid-IR operation' Dataset DOI: 10.5258/SOTON/D1255 ReadMe Author: Andrea Ventura, University of Southampton This dataset supports the publication: AUTHORS: Andrea Ventura, Juliano Grigoleto Hayashi, Jaroslaw Cimek, Gregory Jasion, Petr Janicek, Fedia Ben Slimen, Nicholas White, Qiang Fu, Lin Xu, Hesham Sakr, Natalie V. Wheeler, David J. Richardson and Francesco Poletti TITLE: Extruded tellurite antiresonant hollow core fiber for Mid-IR operation JOURNAL: Optics Express PAPER DOI IF KNOWN: https://doi.org/10.1364/OE.390517 This dataset contains the data supporting the paper. The figures are as follows: Fig. 1 TG/DTA curve of the fabricated tellurite glass. The inset shows a made-in-house tellurite glass billet. Fig. 2 (a) Tellurite glass refractive index measured using a variable angle spectroscopic ellipsometer IR-VASE, J. A. Woollam Co. (b) Transmission spectrum of fabricated tellurite glass normalized on a sample 10 mm thick (blue curve) and transmission spectrum of silica glass for a sample 10 mm thick (green curve) (Reproduced from Heraeus [18]). Fig. 3 (a) Extrusion die, (b) cross-section and (c) side of the tellurite glass extruded preform. Fig. 4 SEM pictures of (a) the tellurite HC-ARF developed by applying 6 mbar of pressure into the capillaries (Fiber A) and (b) the tellurite HC-ARF fabricated by applying 5.2 mbar of pressure into the capillaries (Fiber B). Fig. 5 Attenuation simulated for Fiber A (a) and Fiber B (b) (solid red curve). The dashed black curve represents the simulated confinement loss of the fabricated fiber. The light blue curve represents the fiber loss measured using the FTIR. The black squared dots represent the fiber loss measured using the OPO. The green curve represents the modelling material loss contribution. The black solid curve represents the loss of the fabricated tellurite glass. The inset of (a) shows a thermal image of the output of Fiber A when the Thorlabs tungsten lamp was coupled into a 36 cm long fiber. Fig. 6 (a) Bending loss simulation of Fiber B at 5.6 µm wavelength. The insets show the fundamental mode at 5.6 µm, for a fiber with a curvature radius of 60 cm and for a fiber with a curvature radius of 9 cm. (b) Demonstration of the flexibility of the fabricated tellurite HC-ARF coated with FEP polymer. Fig. 7 Beam quality at the output of the tellurite antiresonant hollow core Fiber B at 5.6 µm wavelength. Fig. 8 Comparison between the experimental loss of Fiber B (black squared dots), the simulation of the real fiber structure (dashed red curve), the idealized fiber structure (dashed-dotted blue curve) and the optimized fiber structure (green solid curve). The brown dotted curve represents the simulated loss of the target fiber structure. The black solid curve represents the loss of the fabricated tellurite glass. Date of data collection: from December 2016 to February 2020 Information about geographic location of data collection: University of Southampton, U.K. Licence: CC BY Date that the file was created: February, 2020