Long-Reach 100 Gbit Ethernet Light Source Based on 4×25-Gbit/s 1.3-µm InGaAlAs EADFB Lasers. - Takeshi Fujisawa; Kiyoto Takahata; Takashi Tadokoro; Wataru Kobayashi; Akira Ohki; Naoki Fujiwara; Shigeru Kanazawa; Takayuki Yamanaka; Fumiyoshi Kano (IEICE Trans. Electron., 2011)