In 1994, he joined Submarine Cable Systems Dept. of KDDI Corporation. He is a senior research engineer of Optical Network Group in KDDI R&D Laboratories Inc. He is also a research fellow of NICT JGN II Tsukuba Research Center. His research interests have been intelligent optical networks. He received the Young Engineering Award from IEICE of Japan in 1999. He is a member of the IEICE.