Institute of Innovative Research;
Tokyo Institute of Technology;
Midori-ku;
Yokohama 226-8503;
Japan;
Research Center for Advanced Science and Technology;
The University of Tokyo;
Meguro-ku;
Tokyo 153-8904;
Japan;
Servo Laboratory;
FANUC Corporation;
Oshino-mura;
Yamanashi 401-0597;
Japan;
Department of Physics;
Chung-Ang University;
Dongjak-gu;
Seoul 06974;
Korea;
Brillouin scattering; distributed strain and temperature sensing; high-speed measurement; nonlinear optics; optical fibre sensors;