Multi-vendor 100G DP-QPSK line-side interoperability field trial over 1030 km. - Nestor Garrafa; Omar Salome; Thomas Mueller; Oscar Pache Carcelen; Gianluca Calabretta; Nacho Carretero; Gabriele Galimberti; Steven Keck; Víctor López; Dirk van den Borne (OFC, 2017)