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

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 (CH(4)). In this paper, we demonstrate methane sensing with a 1670-nm band HC-PBF. A multiline algorithm is used to fit t...

Full description

Saved in:
Bibliographic Details
Published in:Optics express 2007-12, Vol.15 (26), p.17570-17576
Main Authors: Cubillas, A M, Silva-Lopez, M, Lazaro, J M, Conde, O M, Petrovich, M N, Lopez-Higuera, J M
Format: Article
Language:English
Subjects:
Algorithms
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology
Methane - analysis
Photons
Reproducibility of Results
Sensitivity and Specificity
Spectrum Analysis - instrumentation
Spectrum Analysis - methods
Transducers
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 (CH(4)). 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.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.15.017570