25.8Gbps Direct Modulation AlGaInAs DFB lasers of low power consumption and wide temperature range operation for data center. - Naoki Nakamura; Masaaki Shimada; Go Sakaino; Takashi Nagira; Harunaka Yamaguchi; Yuichiro Okunuki; Atsushi Sugitatsu; Masayoshi Takemi (OFC, 2015)