Dynamic analysis on the fabrication of CO2 laser written long-period fiber gratings

Author

Tu, Wentao ; Liu, Yunqi ; Chen, Na ; Pang, Fufei ; Wang, Tingyun

Author_Institution

Key Lab. of Specialty Fiber Opt. & Opt. Access Networks, Shanghai Univ., Shanghai, China

fYear

2010

fDate

14-16 Dec. 2010

Firstpage

1

Lastpage

4

Abstract

We demonstrate experimentally that the new resonance dips can be generated during the fabrication of CO₂ laser written long-period fiber gratings (LPFGs) in a single-mode fiber (SMF) under tension. The dynamic analysis of laser writing process was adopted to study the mechanism of the grating inscription. The new characteristics of grating growth were observed except for the increase of writing efficiency with the applied axial tension in the fiber. Our experiments results show that the wavelength shift of new generated resonance peaks was different for the gratings with different pitches. The wavelength of new generated resonance dips could shift towards shorter or longer wavelength with the increase of laser scanning cycles.

Keywords

Bragg gratings; carbon compounds; gas lasers; laser beam applications; optical fibre fabrication; spectral line shift; CO₂; CO₂ laser writing; axial tension; dynamic analysis; grating growth; grating inscription; laser scanning; long-period fiber gratings; resonance dips; single-mode fiber; wavelength shift; Fiber gratings; Fiber lasers; Gratings; Optical fiber networks; Optical fiber sensors; Optical fibers;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Global Conference (PGC), 2010

Conference_Location

Singapore

Print_ISBN

978-1-4244-9882-6

Type

conf

DOI

10.1109/PGC.2010.5705963

Filename

5705963