DocumentCode
1239611
Title
Glass Structure Changes in CO 
-Laser Writing of Long-Period Fiber Gratings in Boron-Doped Single-Mode Fibers
Author
Liu, Yunqi ; Lee, Ho Wai ; Chiang, Kin Seng ; Zhu, Tao ; Rao, Yun Jiang
Author_Institution
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon
Volume
27
Issue
7
fYear
2009
fDate
4/1/2009 12:00:00 AM
Firstpage
857
Lastpage
863
Abstract
We investigate in detail the process of CO2-laser writing of long-period fiber gratings (LPFGs) in unannealed and annealed boron-doped fiber samples by using repeated scanning of CO2-laser pulses. We find that the writing dynamics depends strongly on the CO2-laser energy density and the annealing temperature of the fiber. Our results from analyzing the writing dynamics reveal the relative importance of various physical effects arising from glass structure changes due to different writing conditions and thus provide a better understanding of the formation and the properties of CO2-laser written LPFGs.
Keywords
annealing; boron; diffraction gratings; glass structure; laser materials processing; optical fibre fabrication; optical glass; CO2; JkJk:B; LPFG; annealing; boron-doped single-mode fibers; glass structure; laser energy density; laser pulses; laser writing; long-period fiber gratings; physical effects; Annealing; Educational technology; Electronic mail; Fiber gratings; Glass; Optical fiber communication; Optical fibers; Stress; Ultrafast optics; Writing; Boron-doped fiber; CO $_{2}$ laser; glass structure changes; long-period fiber gratings (LPFGs); stress relaxation;
fLanguage
English
Journal_Title
Lightwave Technology, Journal of
Publisher
ieee
ISSN
0733-8724
Type
jour
DOI
10.1109/JLT.2008.927754
Filename
4814846
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