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Title: Experimental demonstration of a fiber-optic gas sensor network addressed by FMCW
Authors: Ho, Hoi-lut
Jin, Wei
Yu, H. B.
Chan, Peter K. C.
Chan, C. C.
Demokan, Suleyman
Subjects: Frequency-modulated continuous wave
Optical fiber gas sensors
Sensor multiplexing
Wavelength modulation spectroscopy
Issue Date: Nov-2000
Publisher: IEEE
Source: IEEE photonics technology letters, Nov. 2000, v. 12, no. 11, p.1546-1548.
Abstract: We report on the use of frequency-modulated continuous-wave and wavelength modulation spectroscopy techniques for addressing a multipoint gas sensor network. A three-sensor network of ladder topology is experimentally demonstrated for the detection of acetylene gas. A minimum detectable concentration of 270 ppm/√Hz is obtained with 25-mm gas cells under atmospheric pressure which corresponds to a minimum detectable absorbance of 3.40 x 10[sup - 4]. The crosstalk between the sensors is below -22 dB.
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Type: Journal/Magazine Article
DOI: 10.1109/68.887743
ISSN: 1041-1135
Appears in Collections:EE Journal/Magazine Articles

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