28-Gb/s directly modulated InGaAlAs ACPM DFB lasers with high mask margin of 22% at 55°C. - Kouji Nakahara; Yuki Wakayama; K. Hiruma; Takeshi Kitatani; Kazunori Shinoda; T. Fukamachi; Yasushi Sakuma; Shigehisa Tanaka (OFC/NFOEC, 2013)

Uncooled clear-eye-opening operation (25 to 95°C) of 25.8/28-Gbps 1.3-µm InGaAlAs-MQW directly modulated DFB lasers. - T. Fukamachi; Atsushi Nakamura; Yasushi Sakuma; Shigenori Hayakawa; Ryu Washino; M. Mukaikubo; K. Okamoto; T. Nakajima; K. Motoda; Kazuhiko Naoe; K. Nakahara; Yuki Wakayama; et al. (OFC, 2014)

25.8 Gbps error free transmission over 10 km at wavelengths from 1271 to 1331nm by uncooled (25 to 85°C) directly modulated DFB lasers for 100G-CWDM4. - Takayuki Nakajima; T. Fukamachi; Mitsuo Akashi; Atsushi Nakamura; Yasushi Sakuma; Shigenori Hayakawa; Ryu Washino; M. Mukaikubo; K. Okamoto; K. Motoda; Kazuhiko Naoe; K. Nakahara; et al. (OFC, 2015)