Limitation of absorption-based fiber optic gas sensors by coherent reflections

Wei Jin, G. Stewart, W. Philp, B. Culshaw, M. S. Demokan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


We report the noise limitation of fiber optic gas sensors with highly coherent laser sources. Interference between signal and reflected waves causes signal fluctuation in the output; this limits the performance of the sensing system. Sensor resolutions limited by coherent reflections are calculated and compared with experimental results.
Original languageEnglish
Pages (from-to)6251-6255
Number of pages5
JournalApplied Optics
Issue number25
Publication statusPublished - 1 Sept 1997


  • Coherent reflections
  • Fiber optic sensors
  • Gas sensors
  • Interferometric noise

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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