Title :
Fabrication of long-period fibre grating by CO2 laser-annealing in fibre-drawing process
Author :
Hirose, T. ; Saito, K. ; Kojima, S. ; Yao, B. ; Ohsono, K. ; Sato, S. ; Takada, K. ; Ikushima, A.J.
Author_Institution :
Dept. of Electron. Eng., Gunma Univ.
Abstract :
Long-period fibre grating (LPFG) writing by a CO2 laser-annealing using a fibre-drawing process is demonstrated. The fibre in the drawing process was irradiated periodically by a CO2 laser to modify the refractive index. An LPFG with transmission loss of -10 dB and full width at half-maximum of 13 nm has been fabricated. Results show that the refractive index change was induced by stress at the moment of laser annealing
Keywords :
diffraction gratings; gas lasers; laser beam annealing; optical fibre fabrication; CO2 laser-annealing; fibre-drawing process; long-period fibre grating; refractive index;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20073771
