O-band QKD link over a multiple ONT loaded carrier-grade GPON for FTTH applications. - Nikos Makris; Argiris Ntanos; Alkinoos Papageorgopoulos; Aristeidis Stathis; Persefoni Konteli; Iliana Tsoni; Giannis Giannoulis; Fotini Setaki; Theofanis Stathopoulos; George L. Lyberopoulos; Hercules Avramopoulos; George T. Kanellos; et al. (OFC, 2024)