Photonic-lantern-based mode multiplexers for few-mode-fiber transmission. - Roland Ryf; Nicolas K. Fontaine; M. Montoliu; Sebastian Randel; Burcu Ercan; Haoshuo Chen; S. Chandrasekhar 001; Alan H. Gnauck; Sergio G. Leon-Saval; Joss Bland-Hawthorn; J. R. Salazar-Gil; Yan Sun; et al. (OFC, 2014)