was born in Osaka, Japan on December 9, 1974.
He received the Ph.D. degree in electronics and information
systems engineering from Osaka University, Osaka,
Japan in 2000.
From 2000 to 2002, he was a research associate at
Department of Applied Mathematics,
University of Colorado at Boulder, CO.
He is currently a professor at
Research Institute of Electrical Communication,
Tohoku University, Sendai, Japan.
His research interests include nonlinear optics and fiber-optic
communications.
Dr. Hirooka is a member of Optical Society of America (OSA), IEEE, Insititute of Electronics, Information and Communication Engineers (IEICE) of Japan, and Laser Society of Japan.