Processing of heat-resistant fiber Bragg grating using femto-second pulse laser by point-by-point method

Shimada, Yukihiro; Nishimura, Akihiko; Saruta, Koichi; Tsukimori, Kazuyuki; Kobayashi, Takao*

no journal, , 

Fiber Bragg grating (FBG) sensor system is a powerful method of detecting strain and temperature of a structure, and is put in practical use widely. However, a general FBG sensor system has a fault without tolerance in high temperature. We performed the micro fabrication in the silica fiber by the point by point method using femtosecond pulse laser. As a result, we succeeded in heat-resistant creation of FBG.