Instabilities in passive dispersion oscillating fiber ring cavities François Copie, Matteo Conforti, Alexandre Kudlinski, Arnaud Mussot, Fabio Biancalana and Stefano Trillo Eur. Phys. J. D, 71 5 (2017) 133 Published online: 25 May 2017 DOI: 10.1140/epjd/e2017-80130-x