Numerical Analysis of Tapered Multicore Fibres for Laser System Scaling Christopher Aleshire, Albrecht Steinkopff, Arno Klenke, Cesar Jauregui and Jens Limpert EPJ Web Conf., 267 (2022) 02020 Published online: 18 October 2022 DOI: 10.1051/epjconf/202226702020