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Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method

Locating gas concentration changes in widespread locations can be conducive to environmental atmospheric detection, gas emissions monitoring, production process control, etc. A time domain multiplexed dual-comb system for segment-resolved gas concentration measurement is reported in this work. Both...

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Detalles Bibliográficos
Autores principales: Chen, Xinyi, Zhang, Weipeng, Zhang, Yujia, Lu, Minjian, Li, Yan, Wei, Haoyun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7146138/
https://www.ncbi.nlm.nih.gov/pubmed/32168966
http://dx.doi.org/10.3390/s20061566
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author Chen, Xinyi
Zhang, Weipeng
Zhang, Yujia
Lu, Minjian
Li, Yan
Wei, Haoyun
author_facet Chen, Xinyi
Zhang, Weipeng
Zhang, Yujia
Lu, Minjian
Li, Yan
Wei, Haoyun
author_sort Chen, Xinyi
collection PubMed
description Locating gas concentration changes in widespread locations can be conducive to environmental atmospheric detection, gas emissions monitoring, production process control, etc. A time domain multiplexed dual-comb system for segment-resolved gas concentration measurement is reported in this work. Both absorption spectra and path lengths for multiple path-segments in a target path can be derived from the time domain separated interferograms and then the equivalent gas concentrations in each segment can be retrieved separately. A benchtop experiment aiming at a target path with three path-segments of different gases has been demonstrated. The relative deviation of gas concentration retrieval is 1.08% in 1 s. Besides, additional numerical simulations prove that the crosstalk between the interference signals affects the spectrum analysis by no more than 0.1% for a kilometer-long atmospheric absorption detection. Therefore, achieving a gridded measurement of regional gas concentration in the open air can be foreseen using this method.
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spelling pubmed-71461382020-04-15 Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method Chen, Xinyi Zhang, Weipeng Zhang, Yujia Lu, Minjian Li, Yan Wei, Haoyun Sensors (Basel) Article Locating gas concentration changes in widespread locations can be conducive to environmental atmospheric detection, gas emissions monitoring, production process control, etc. A time domain multiplexed dual-comb system for segment-resolved gas concentration measurement is reported in this work. Both absorption spectra and path lengths for multiple path-segments in a target path can be derived from the time domain separated interferograms and then the equivalent gas concentrations in each segment can be retrieved separately. A benchtop experiment aiming at a target path with three path-segments of different gases has been demonstrated. The relative deviation of gas concentration retrieval is 1.08% in 1 s. Besides, additional numerical simulations prove that the crosstalk between the interference signals affects the spectrum analysis by no more than 0.1% for a kilometer-long atmospheric absorption detection. Therefore, achieving a gridded measurement of regional gas concentration in the open air can be foreseen using this method. MDPI 2020-03-11 /pmc/articles/PMC7146138/ /pubmed/32168966 http://dx.doi.org/10.3390/s20061566 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Xinyi
Zhang, Weipeng
Zhang, Yujia
Lu, Minjian
Li, Yan
Wei, Haoyun
Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method
title Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method
title_full Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method
title_fullStr Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method
title_full_unstemmed Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method
title_short Segment-Resolved Gas Concentration Measurements by a Time Domain Multiplexed Dual Comb Method
title_sort segment-resolved gas concentration measurements by a time domain multiplexed dual comb method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7146138/
https://www.ncbi.nlm.nih.gov/pubmed/32168966
http://dx.doi.org/10.3390/s20061566
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