Fast response microstructured optical fiber methane sensor with multiple side-openings

Y. L. Hoo, Shujing Liu, Hoi Lut Ho, Wei Jin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

88 Citations (Scopus)

Abstract

We have demonstrated a fast response optical fiber methane sensor by use of a hollow-core photonic bandgap fiber with periodic microchannels fabricated by a femtosecond Ti : sapphire laser. A diffusion limited response time of ∼3 s and a sensitivity of ∼647 ppm have been achieved for a 7-cm sensing fiber with seven side-holes separated by 1 cm along the fiber. The side holes introduce very little loss and hence it would be practically possible to construct fiber gas sensors with long sensing length (up to a few tens of meters) to achieve highly sensitive distributed sensing without compromising the response time.
Original languageEnglish
Article number5373860
Pages (from-to)296-298
Number of pages3
JournalIEEE Photonics Technology Letters
Volume22
Issue number5
DOIs
Publication statusPublished - 1 Mar 2010

Keywords

  • Gas sensor
  • Hollow-core photonic bandgap fiber (hc-pbf)
  • Index terms-diffusion
  • Methane
  • Microstructured fiber (mf)

ASJC Scopus subject areas

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

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