READ ME File For Dataset for: Numerical modelling of a hybrid hollow-core fiber for enhanced mid-infrared guidance Dataset DOI: ReadMe Author: Seyed Mohammad Abokhamis Mousavi, University of Southampton This dataset supports the publication: AUTHORS:Juliano Hayashi,Seyed Mohammad Abokhamis Mousavi,Andrea Ventura,Francesco Poletti. TITLE:Numerical modelling of a hybrid hollow-core fiber for enhanced mid-infrared guidance JOURNAL:Optics Express PAPER DOI IF KNOWN:https:https://doi.org/10.1364/OE.423257 This dataset contains the data for the figures as follows: Fig. 2 (a) Simulated optical loss of the HE11 mode for the three fiber designs seen in (b). The modeling considers leakage and material losses, and the fibers have equivalent structural parameters, i.e., same constituent materials (IG3/FEP), 8 bilayers, six tubular elements, same thicknesses of tubes and layers, and same inner jacket diameter (apart from Bragg fiber sc, which has an inner jacket diameter and core diameter of 190 µm). Insets: Example of the x-polarized HE11 modes in the Bragg and tubular/hybrid structure. (c) Loss of the Hybrid fiber 1 as a function of the number of bilayers in the Bragg structure. Fig. 3 (a) Overall loss of the HE11 mode when the fiber is bent as a function of ’2 for the Bragg fibers (1 and sc), tubular AR-HCF 1, and Hybrid fiber 1. All Bragg structures have 8 bilayers of IG3/FEP. The curvature is restricted to the zx plane, the modes are polarized in the G direction, and _=10.6 µm. The structural parameters of the fibers are listed in Table 1. (b) Power flow of the HE11 modes in the I direction for the different structures. (c) The difference in the loss between the fibers and the Hybrid fiber 1 as a function of ’2. (d) Comparison between the absolute value of 3퐵! 3’2 for the different designs. Fig. 4 Loss of the first 50 lowest-loss core modes in the Bragg fibers (sc and 1), tubular AR-HCF 1 and Hybrid fiber 1 at _ = 10.6 µm. The HE11 modes of each fiber design are indicated by the coloured rectangles. Fig. 5 Simulated optical loss of the HE11 mode for several Hybrid fibers designed to exhibit low-loss through the MIR (5 µm to 10.6 µm). Their structural parameters are the same as the tubular AR-HCF 1 (blue curve), but each IG3/FEP hybrid fiber has a different 20 bilayers Bragg cladding that individually matches one transmission band of the tubular structure. All structural parameters are listed in Table 2. The bulk experimental losses of the FEP polymer (black dashed-doted curve) and the IG3 glass (red dashed curve) are also shown. Date of data collection: 2020 Information about geographic location of data collection: Licence: none Related projects: This project has received funding from the European Research Council (ERC) (grant agreement n° 682724 – LightPipe project), from the EPSRC Airguide Photonics (EP/P030181/1), National Hub in High Value Photonics Manufacturing (EP/N00762X/1), and the Royal Society (Newton International Fellowship – NF170629). Date that the file was created: 2021