112 GBaud PAM4 Barium Titanate Coupling Modulated Ring Modulator Monolithically Integrated on a Silicon Substrate. - Benton Qiu; Charles St-Arnault; Weijia Li; Jinsong Zhang; Aleksandar Nikic; Santiago Bernal; Zixian Wei; Kaibo Zhang; Thomas Kornher; Cyriel Minkenberg; Felix Eltes; Mateusz Zbik; et al. (OFC, 2025)