JOURNAL: Optics Express PAPER DOI: 10.1364/OE.396798 This dataset contains: Raw data associated with the paper of the title ("Individual inscription of spectrally multiplexed Bragg gratings in optical multicore fibers using small spot direct UV writing") The spreadsheet contains the data for figures 3b and 6b as discribed below. The figures are as follows: Fig. 3b Optical reflection spectrum of all cores. Fig. 6b Optical reflection spectrum of all cores. Date of data collection: 2019 Licence: CC BY Date that the file was created: 2020