Monitoring of Carbon Dioxide Using Hollow-Core Photonic Crystal Fiber Mach-Zehnder Interferometer

Monitoring of greenhouse gases is essential to understand the present state and predict the future behavior of greenhouse gas emissions. Carbon dioxide (CO ) is the greenhouse gas of most immediate concern, because of its high atmospheric concentration and long lifetime. A fiber-optic Mach-Zehnder i...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Vol. 19; no. 15; p. 3357
Main Authors: Ahmed, Farid, Ahsani, Vahid, Nazeri, Kaveh, Marzband, Ehsan, Bradley, Colin, Toyserkani, Ehsan, Jun, Martin B G
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 31-07-2019
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Summary:Monitoring of greenhouse gases is essential to understand the present state and predict the future behavior of greenhouse gas emissions. Carbon dioxide (CO ) is the greenhouse gas of most immediate concern, because of its high atmospheric concentration and long lifetime. A fiber-optic Mach-Zehnder interferometer (MZI) is proposed and demonstrated for the laboratory-scale monitoring of carbon dioxide concentration. The interferometric sensor was constructed using a small stub of hollow-core photonic crystal fiber between a lead-in and lead-out standard single mode fiber, with air-gaps at both interfaces. At room temperature and atmospheric pressure, the sensor shows the sensitivity of 4.3 pm/% CO . The device was packaged to demonstrate the laboratory-scale leakage detection and measurement of CO concentration in both subsurface and aqueous environments. The experimental study of this work reveals the great potential of the fiber-optic approach for environmental monitoring of CO .
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ISSN:1424-8220
1424-8220
DOI:10.3390/s19153357