$8 times 225$ Gbit/S PAM-8 Transmission Employing DFB Laser Array Source and Quantum-DoT SOA-PIN for Intra DCIs. - Ahmed Galib Reza; Lakshmi Narayanan Venkatasubramani; Janina Rautert; Vladimir S. Mikhrin; Robert McKenna; Gaurav Jain; Amol Delmade; Frank Smyth; Alexey Gubenko; Liam P. Barry (ECOC, 2025)