Optimization of design and processing of fiber Bragg grating using femto-second pulse laser by point-by-point method

Shimada, Yukihiro; Nishimura, Akihiko

no journal, , 

We are developing the FBG sensor system for a aging measurement and seismic safety of heat exchanger in the nuclear power plant. The sensor produced with the point-by-point method using ultra-short pulse laser is excellent in heat-resistant compared with UV-light interference exposure method. It reports on the performance assessment, the processing experiment of the design, and the counting system of the reflected spectrum.