Low cost 112 Gb/s InP DFB-EAM for PAM-4 2 km transmission. - Christophe Caillaud; M. A. Mestre Adrover; Fabrice Blache; Frédéric Pommereau; Jean Decobert; Filipe Jorge; Philippe Charbonnier; Agnieszka Konczykowska; Jean-Yves Dupuy; Haïk Mardoyan; Karim Mekhazni; Jean-Francois Paret; et al. (ECOC, 2015)