First Demonstration of 112 Gb/s PAM-4 Amplifier-free Transmission over a Record Reach of 40 km Using 1.3 μm Directly Modulated Laser. - Weiyu Wang; Pengchao Zhao; Zhike Zhang; Huanlu Li; Dajun Zang; Ninghua Zhu; Yuchun Lu (OFC, 2018)

Performance Enhancement of 112 Gb/s PAM-4 Amplifier-Free 40km Transmission with Record Sensitivity using O-Band 25G-Class Directly Modulated Laser. - Weiyu Wang; Huanlu Li; Zhike Zhang; Pengchao Zhao; Dajun Zang; Ninghua Zhu; Yuchun Lu (OFC, 2019)