Uncooled Operation of 53-Gbaud PAM4 EA-DFB Lasers in the Wavelength Range of 1510-1570 nm for 800-GbE Applications. - Yoshihiro Nakai; Shigenori Hayakawa; Syunya Yamauchi; Yoriyoshi Yamaguchi; Tetsuyoshi Takamure; Hideaki Asakura; Ryosuke Nakajima; Shigetaka Hamada; Kazuhiko Naoe (OFC, 2020)