Wavelength modulation technique for intra-cavity absorption gas sensors

Min Zhang, D. N. Wang, Wei Jin, Yanbiao Liao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

40 Citations (Scopus)


Wavelength modulation spectroscopy by the use of a tunable optical filter was applied to an intra-cavity fiber laser gas sensor. The optimum pump power and the modulation amplitude that maximized the signal-to-noise ratio were found. A minimum detectable gas (C2H2) concentration of 1000 ppm was experimentally achieved.
Original languageEnglish
Pages (from-to)136-139
Number of pages4
JournalIEEE Transactions on Instrumentation and Measurement
Issue number1
Publication statusPublished - 1 Feb 2004


  • Gas sensor
  • Intra-cavity
  • Ring fiber laser
  • Wavelength modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation


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