Title :
Long-period fiber gratings written in the microstructure specialty fibers
Author_Institution :
Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China
Abstract :
We demonstrate the fabrication of long-period fiber gratings (LPFGs) written by CO2 laser in different micro-structure specialty fibers. The characteristics of grating growth were studied by using the dynamic analysis of laser writing process. It can be believed that the residual stress relaxation, glass structure changes, and frozen of the non-uniformed external stress account for the formation of LPFGs. The sensing characteristics of the LPFGs were investigated experimentally before and after nano-film coating of the gratings.
Keywords :
optical fibres; optical sensors; LPFG; dynamic analysis; glass structure changes; laser writing process; long-period fiber gratings; microstructure specialty fibers; nano-film coating; residual stress relaxation; Fiber gratings; Fiber lasers; Optical fiber networks; Optical fiber polarization; Optical fiber sensors; Writing; CO2 laser; coating; long-period fiber grating; optical sensors; specialty fibers;
Conference_Titel :
Advanced Infocomm Technology (ICAIT), 2013 6th International Conference on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4799-0464-8
DOI :
10.1109/ICAIT.2013.6621504
