256 GBd Barium-Titanate-on-SiN Mach-Zehnder Modulator. - Manuel Kohli; Daniel Chelladurai; Laurenz Kulmer; Killian Keller; Yannik Horst; Tobias Blatter; Joel Winiger; David Moor; Tatiana Buriakova; Michael Zervas; Clarissa Convertino; Felix Eltes; et al. (OFC, 2024)