Eindhoven University of Technology;
Eindhoven 5600MB;
The Netherlands;
State Key Laboratory of Electronic Thin Films and Integrated Devices;
School of Optoelectronic Science and Engineering;
University of Electronic Science&Technology of China;
Chengdu 610054;
China;
College of Electronic and Optical Engineering&College of Microelectronics;
Nanjing University of Posts and Telecommunications;
Nanjing 210046;
China;
directly modulated laser; data center; 5G fronthaul network;