DocumentCode :
1347281
Title :
The Use of a Fiber Comb Filter Fabricated by a CO 
Laser Irradiation to Improve the Resolution of a Ratiometric Wavelength Measurement System
Author :
Wang, Pengfei ; Brambilla, Gilberto ; Ding, Ming ; Semenova, Yuliya ; Wu, Qiang ; Farrell, Gerald
Author_Institution :
Photonic Res. Centre, Dublin Inst. of Technol., Dublin, Ireland
Volume :
30
Issue :
8
fYear :
2012
fDate :
4/15/2012 12:00:00 AM
Firstpage :
1143
Lastpage :
1149
Abstract :
An edge filter-based ratiometric wavelength measurement system is modeled and analyzed in this paper. The results confirm that the noise of input signal and photodetectors limits the resolution of the wavelength measurement system. The achievable resolution is calculated for a given noise level of the input signal and photodetectors´ resolution. An improved ratiometric wavelength measurement system consisting of two fiber comb filters is presented both theoretically and experimentally, which performs coarse and fine wavelength measurements simultaneously. The resolution of the system is significantly improved to better than 5 pm while maintaining the potential for high measurement speed and wide measurable wavelength range.
Keywords :
laser beam effects; optical fibre fabrication; optical fibre filters; photodetectors; CO2 laser irradiation; edge filter; fiber comb filter; input signal; noise level; optical fibre fabrication; photodetectors limits; ratiometric wavelength measurement system; Fiber lasers; Optical fiber filters; Photodetectors; Signal resolution; Signal to noise ratio; Temperature measurement; Wavelength measurement; Edge filter; fiber comb filter; laser irradiation; wavelength measurement;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2011.2171319
Filename :
6042317
Link To Document :
