Highly scalable coherent fiber combining M. Antier, J. Bourderionnet, C. Larat, E. Lallier and A. Brignon Eur. Phys. J. Special Topics, 224 13 (2015) 2551-2555 Published online: 26 October 2015 DOI: 10.1140/epjst/e2015-02564-x