Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2012/08/01 Vol. E95-CNo. 8pp. 1363-1368 Type of Manuscript: Special Section PAPER (Special Section on Heterostructure Microelectronics with TWHM 2011) Category: GaN-based Devices Keyword: Gallium-nitride, electro-optic, optical waveguide, optoelectronics,