Title :
The bending sensitivity of long-period fiber gratings written by CO2 laser under external tension
Author :
Yang, Dan ; Liu, Yunqi ; Tu, Wentao ; Wang, Tingyun
Author_Institution :
Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China
Abstract :
We studied experimentally the bending sensitivity of long-period fiber gratings (LPFGs) written by CO2 laser under external tension. Not only higher sensitivity was observed, but also the LPFG was sensitive to the bending direction, which can be attributed to the laser-induced asymmetric index modification across the fiber section.
Keywords :
bending; carbon compounds; diffraction gratings; fibre optic sensors; gas lasers; laser materials processing; mechanical variables measurement; optical fibre fabrication; CO2; CO2 laser writing; bending sensitivity; external tension; laser-induced asymmetric index modification; long-period fiber gratings; Fiber gratings; Fiber lasers; Gratings; Optical fiber networks; Optical fiber sensors; Surface waves; bending; fiber sensor; long-period fiber grating;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2010 Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-7111-9
DOI :
10.1109/ACP.2010.5682769
