Takahiro Numai was born in Okayama Prefecture,
Japan, on January 1, 1961. He
received the B.S., M.S., and Ph.D. degrees
in electrical engineering from Keio University, Yokohama, Japan, in 1982., 1985, and 1992, respectively.
In 1985 he joined the Opto-Electronics
Research Laboratories, NEC Corporation, Kawasaki, Japan, where he was engaged
in
research and development of Laser Diodes for lightwave
transmission systems and wavelength tunable optical filters for photonic
switching systems. He developed a
grating fabrication technology which was used for the first manufacturing of
phase-shifted
distributed feedback laser diodes (DFB-LDs). They have been used in trunk-lines of
Japan and submarine-lines between Japan
and U.S.A. in lightwave transmission systems. His work on optical filters based on DFB
structures brought him the Ph.D. degree
in 1992. In 1990 he joined the Opto-Electronics Research Laboratories, NEC Corporation,
Tsukuba, Japan, where he studied
semiconductor optical functional devices for optical information processing and
vertical cavity surface emitting Laser Diodes.
From 1991 to 1994 he had been Assistant Manager with NEC Opto-Electronics
Research Laboratories. In 1994 he
joined the
Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
as Associate Professor. In 1998 he
joined the
Canon Research Center, Atsugi, Japan.
In 2003 he joined the Department of Electrical and Electronic
Engineering, Ritsumeikan
University, Kusatsu, Japan as Professor.
He holds 28 U.S. patents, and has authored and
co-authored more than 150 technical papers and international conference
communications on optoelectronics.
He has also written textbooks in the following.
“Fundamentals
of Semiconductor Laser Technology” (Maruzen, 1996, in Japanese),
“Problems
and Solutions on Solid State Physics” (Maruzen, 2000, in Japanese),
“Problems
and Solutions on Thermal Physics and Statistical Physics” (Maruzen, 2001, in
Japanese),
“Introduction
to Logic Circuits” (Maruzen, 2004, in Japanese) ,
“Fundamentals
of Semiconductor Lasers” (Springer, 2004),
“Problems
and Solutions on Solid State Physics, revised edition” (Maruzen, 2005, in
Japanese),
“Semiconductor Devices - Learning through Examples”
(Morikita, 2006, in Japanese),
“Introduction
to Materials Science” (Morikita, 2007, in Japanese),
“Introduction
to Statistical Physics” (Morikita, 2008, in Japanese),
“Essentials
of Electricity and Magnetism for College Students” (Kyoritsu, 2010 in
Japanese),
“Essentials
of Quantum Mechanics for College Students” (Kyoritsu, 2010 in Japanese),
“Laser
Diodes and Their Applications to Communications and Information Processing”
(Wiley & IEEE, 2010),
“Problems and Solutions in Electromagnetism
for College Students (Kyoritsu, 2011 in Japanese),
“Solid
State Physics” (Ohm, 2012, in Japanese),
“Problems
and Solutions in Quantum Mechanics for College Students (Kyoritsu, 2013, in
Japanese).
Prof. Numai is a member of the Institute of
Electronics, Information, and Communication Engineers of Japan, the Japan
Society
of Applied Physics, the Physical Society of Japan, and a senior member of the
Institute of Electrical and Electronics Engineers (IEEE)
and the Optical Society of America (OSA).
