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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 26 — Dec. 24, 2007
  • pp: 17570–17576

Methane detection at 1670-nm band using a hollow-core photonic bandgap fiber and a multiline algorithm

A. M. Cubillas, M. Silva-Lopez, J. M. Lazaro, O. M. Conde, M. N. Petrovich, and J. M. Lopez-Higuera  »View Author Affiliations

Optics Express, Vol. 15, Issue 26, pp. 17570-17576 (2007)

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The long interaction pathlengths provided by hollow-core photonic bandgap fibers (HC-PBFs) are especially advantageous for the detection of weakly absorbing gases such as methane (CH4). In this paper, we demonstrate methane sensing with a 1670-nm band HC-PBF. A multiline algorithm is used to fit the R(6) manifold (near 1645 nm) and, in this way, to measure the gas concentration. With this method, a minimum detectivity of 10 ppmv for the system configuration was estimated.

© 2007 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.3990) Optical devices : Micro-optical devices
(300.1030) Spectroscopy : Absorption

ToC Category:
Photonic Crystal Fibers

Original Manuscript: October 10, 2007
Revised Manuscript: November 21, 2007
Manuscript Accepted: November 21, 2007
Published: December 11, 2007

A. M. Cubillas, M. Silva-Lopez, J. M. Lazaro, O. M. Conde, M. N. Petrovich, and J. M. Lopez-Higuera, "Methane detection at 1670-nm band using a hollow-core photonic bandgap fiber and a multiline algorithm," Opt. Express 15, 17570-17576 (2007)

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