DocumentCode
1359538
Title
Sensitive, multipoint gas detection using TDM and wavelength modulation spectroscopy
Author
Ho, H.L. ; Jin, W. ; Demokan, M.S.
Author_Institution
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China
Volume
36
Issue
14
fYear
2000
fDate
7/6/2000 12:00:00 AM
Firstpage
1191
Lastpage
1193
Abstract
The authors report on the use of time division multiplexing coupled with wavelength modulation of an external cavity laser for sensitive, multipoint gas detection. A three-sensor ladder-topology acetylene system is experimentally demonstrated with a detection sensitivity of 150 ppm (25 mm gas cells) for a time constant of 300 ms and -30 dB crosstalk between the sensors
Keywords
modulation spectroscopy; 300 ms; TDM; acetylene; crosstalk; detection sensitivity; external cavity laser; gas detection; multipoint gas detection; sensitive multipoint gas detection; three-sensor ladder-topology acetylene system; time constant; time division multiplexing; wavelength modulation; wavelength modulation spectroscopy;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20000886
Filename
852234
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