Experimental demonstration of a fiber-optic gas sensor network addressed by FMCW

Authors
Ho, HL Jin, W Yu, HB Chan, KC Chan, CC Demokan, MS
Citation
Hl. Ho et al., Experimental demonstration of a fiber-optic gas sensor network addressed by FMCW, IEEE PHOTON, 12(11), 2000, pp. 1546-1548
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE PHOTONICS TECHNOLOGY LETTERS
ISSN journal
10411135 → ACNP
Volume
12
Issue
11
Year of publication
2000
Pages
1546 - 1548
Database
ISI
SICI code
1041-1135(200011)12:11<1546:EDOAFG>2.0.ZU;2-B
Abstract
We report on the use of frequency-modulated continuous-wave and wavelength modulation spectroscopy techniques for addressing a multipoint gas sensor n etwork. A three-sensor network of ladder topology is experimentally demonst rated for the detection of acetylene gas. A minimum detectable concentratio n of 270 ppm/root Hz is obtained with 25-mm gas cells under atmospheric pre ssure which corresponds to a minimum detectable absorbance of 3.40 x 10(-4) . The crosstalk between the sensors is below -22 dB.