Sensitive, multi-point gas detection using FMCW and WMS

H. L. Ho, W. Jin, H. B. Yu, Chun Chung Chan, M. S. Demokan

Research output: Journal article publicationConference articleAcademic researchpeer-review


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 6.75ppm·m is obtained with a three-sensor system. The crosstalk between the sensors is estimated about -22 dB.
Original languageEnglish
Pages (from-to)420-423
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Dec 2000
Event14th International Conference on Optical Fiber Sensors - Venice, Italy
Duration: 11 Oct 200013 Oct 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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