Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2000/06/25 Vol. E83-CNo. 6pp. 875-883 Type of Manuscript: Special Section PAPER (Special Issue on Advanced Optical Devices for Next Generation High-Speed Communication Systems and Photonic Networks) Category: WDM Network Devices Keyword: external cavity laser, hybrid integration, grating, multiwavelength laser, PLC,