Two approaches for triple coexistence of G-PON, XGS-PON, and 50G-PON systems with extended reach and a class-D ODN. - Fabienne Saliou; Gaël Simon; Stéphane Le Huérou; Guillaume Vu Brugier; Ivan N. Cano; Derek Nesset; Zou Hong; Ricardo Rosales; Mael Bideau; Jérémy Potet; Georges Gaillard; Dylan Chevalier; et al. (J. Opt. Commun. Netw., 2024)