Dataset for Point-by-point Femtosecond Laser Micro-processing of Independent Core-Specific Fiber Bragg Gratings in a Multicore Fiber paper University of Southampton ? ORC ? Andrei Donko ? a.l.donko@soton.ac.uk The file holds data for the transmission and reference spectra recorded at room temperature for the four Bragg gratings inscribed in the 7-core multicore fibre. Date of data collection: from 8 July 2017 - 11 July 2017 Information about geographic location of data collection: University of Southampton, U.K. Date that the file was created: October 31/10/2017 ***Update made 06/12/17*** Column headings were updated providing specific grating details. The second set of data was coloured black as the data was not used in the final paper.