Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2005/05/01 Vol. E88-CNo. 5pp. 951-959 Type of Manuscript: Special Section PAPER (Joint Special Section on Recent Progress in Optoelectronics and Communications) Category: Optical Active Devices and Modules Keyword: 40-Gbit/s, electro-absorption modulator, InGaAsP, InGaAlAs, EAM/DFB laser, uncooled operation,