DocumentCode
2250422
Title
Fiber optic methane sensing system based on wavelength modulation spectroscopy by using logarithm method
Author
Cai, Haiwen ; Yuntao Wang ; Geng, Jianxin ; Fang, Zujie
Author_Institution
Shanghai Inst. of Opt. & Fine Mech., Chinese Acad. of Sci., Shanghai
fYear
2007
fDate
26-31 Aug. 2007
Firstpage
1
Lastpage
2
Abstract
A new method based on logarithm calculation for wavelength modulation spectroscopy is proposed and analyzed. It is shown that in the algorithm the second harmonic signal keeps linear relation with the gas concentration in the whole concentration scale. A fiber optic methane sensing system with much higher SNR was built.
Keywords
fibre optic sensors; gas sensors; optical harmonic generation; optical modulation; organic compounds; fiber optic methane sensing; gas concentration; logarithm method; second harmonic signal; wavelength modulation spectroscopy; Absorption; Amplitude modulation; Gallium arsenide; Nonlinear equations; Optical fibers; Optical modulation; Optical propagation; Optical sensors; Spectroscopy; Tunable circuits and devices;
fLanguage
English
Publisher
ieee
Conference_Titel
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location
Seoul
Print_ISBN
978-1-4244-1173-3
Electronic_ISBN
978-1-4244-1174-0
Type
conf
DOI
10.1109/CLEOPR.2007.4391668
Filename
4391668
Link To Document