Fibre-coupled, multiplexed methane detection using range-resolved interferometry

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dc.contributor.authorBremner, James
dc.contributor.authorKissinger, Thomas
dc.contributor.authorHodgkinson, Jane
dc.contributor.authorTatam, Ralph P.
dc.date.accessioned2021-02-16T16:43:02Z
dc.date.available2021-02-16T16:43:02Z
dc.date.issued2021-02-08
dc.description.abstractWe describe the first use of range-resolved interferometric signal processing for measurement of spectral transmission. This was applied to gas sensing using tunable diode laser spectroscopy, allowing the simultaneous and independent measurement of methane concentrations in multiple gas cells. The system uses a single injection-current modulated diode laser and a single photodetector. For three gas cells, we show the ability of the system to measure methane at noise equivalent concentrations of less than 200 ppm for a 0.5 s measurement period and a potential noise equivalent concentration (1σ) of <20 ppm with 150 s averaging time. We further show that cross-talk between cells is below the experimental uncertainty for the systemen_UK
dc.identifier.citationBremner J, Kissinger T, Hodgkinson J, Tatam RP. (2021) Fibre-coupled, multiplexed methane detection using range-resolved interferometry. Journal of Physics: Photonics, Volume 3, Issue 2, 2021, Article No. 02LT01en_UK
dc.identifier.issn2515-7647
dc.identifier.urihttps://doi.org/10.1088/2515-7647/abe0fd
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16354
dc.language.isoenen_UK
dc.publisherInstitute of Physicsen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectinterferometryen_UK
dc.subjectmultiplexeden_UK
dc.subjectmultipointen_UK
dc.subjectgasen_UK
dc.titleFibre-coupled, multiplexed methane detection using range-resolved interferometryen_UK
dc.typeArticleen_UK

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