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

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)


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 × 10-4. The crosstalk between the sensors is below -22 dB.
Original languageEnglish
Pages (from-to)1546-1548
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number11
Publication statusPublished - 1 Nov 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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