180 GBaud PAM4 Driver-Modulator Engine for IM/DD Transmissions in the O-Band. - Son Tran; Sebastian Lauck; Gerrit Fiol; Jonathan Andree; Felix Ganzer; Robert Emmerich; Colja Schubert; Patrick Runge; Martin Schell; Ronald Freund; Shawn Parker; Trong Phan; et al. (OFC, 2026)