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A multi-point gas sensor network based on a frequency-modulated continuous wave technique and wavelength modulation spectroscopy has been demonstrated for the detection of acetylene gas. A minimum detectable concentration of 6.75ppmrn is obtained with a three-sensor system. The crosstalk between the sensors is estimated about -22 dB.
H. L. Ho
"Sensitive, multi-point gas detection using FMCW and WMS", Proc. SPIE 4185, Fourteenth International Conference on Optical Fiber Sensors, 418528 (9 November 2000); https://doi.org/10.1117/12.2302223
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H. L. Ho, "Sensitive, multi-point gas detection using FMCW and WMS," Proc. SPIE 4185, Fourteenth International Conference on Optical Fiber Sensors, 418528 (9 November 2000); https://doi.org/10.1117/12.2302223