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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 27, Iss. 11 — Jun. 1, 2009
  • pp: 1590–1596

Sub-Minute Response Time of a Hollow-Core Photonic Bandgap Fiber Gas Sensor

Rosalind M. Wynne, Banafsheh Barabadi, Kevin J. Creedon, and Alfonso Ortega

Journal of Lightwave Technology, Vol. 27, Issue 11, pp. 1590-1596 (2009)


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Abstract

A hollow-core photonic bandgap (PBG) fiber sensing configuration for optical absorption spectroscopy of multiple-component gas samples absent of a vacuum environment is presented. Pressure-driven sensor response times that are shorter in duration compared to diffusion-limited filling times for fiber lengths ${>}1$ m are reported. Reduced filling times that approach the sub-minute regime are possible for a ${\sim} {\hbox {2}}$ meter length of commercially available PBG fiber with a 12.5 micron core diameter at a pressure ${<}15$ Psi. The spectroscopy measurements were limited to the near-IR region for sample gases that include acetylene and carbon dioxide. Using the techniques presented, the detection of concentrations ${<}100$ ppm for acetylene gas at pressures ${<}15$ Psi is possible.

© 2009 IEEE

Citation
Rosalind M. Wynne, Banafsheh Barabadi, Kevin J. Creedon, and Alfonso Ortega, "Sub-Minute Response Time of a Hollow-Core Photonic Bandgap Fiber Gas Sensor," J. Lightwave Technol. 27, 1590-1596 (2009)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-27-11-1590

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