This repository contains all the raw data and raw images used in the paper titled 'Highly multi-mode hollow core fibres'. It is grouped into two folders of raw data and raw images. In the raw data there are a number of .dat files which contain alternating columns of wavelength and signal for the different measurements of transmission, cutback and bend loss for the different fibres. In the raw images, simple .tif files of the different fibres are given and different near field and far field images used in Figure 2.

The data in this repository contains the characterisation of fibres presented in the publication 'Multi-core anti-resonant hollow core optical fibre'. This includes microscope images of the fibres and the raw data files for the transmission, cutback and coupling measurements presented. These were taken to quantify the optical performance of the fibres, specifically the loss and inter-core coupling of light. Also included is the Matlab code used to process the data into the figure for the paper.

We have observed unexpected spectral attenuation of ultraviolet light in freshly drawn hollow core optical fibres, which we measure through a short length of fibre using a bentham monochromator and a broadband laser driven light source (EQ-99X). When the fibre ends are left open to atmosphere, this loss feature dissipates over time. The loss matches the absorption spectrum of gaseous (molecular) chlorine and, given enough time, the transmission spectrum of the fibre recovers to that expected from the morphological structure of the fibre. This dataset contains the spectral data output from the optical fibre that was analyzed to show this.

The data archived here is the raw data for the characterisation of a hollow core anti-resonant fibre designed to guide in the ultraviolet wavelength range. Measurement of attenuation and bend loss were performed and the code used to process the raw data is also provided.