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Authors = Bernardo Caroli de Souza

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10 pages, 2631 KiB  
Article
All-Fiber CO2 Sensor Using Hollow Core PCF Operating in the 2 µm Region
by Sully Milena Mejia Quintero, Luiz Carlos Guedes Valente, Marcos Sebastião De Paula Gomes, Hugo Gomes da Silva, Bernardo Caroli de Souza and Sergio R. K. Morikawa
Sensors 2018, 18(12), 4393; https://doi.org/10.3390/s18124393 - 12 Dec 2018
Cited by 36 | Viewed by 4566
Abstract
A realistic implementation of an all-fiber CO2 sensor, using 74 cm of hollow core photonic crystal fiber (HC-PCF) as the cavity for light/gas interaction, has been implemented. It is based on CO2 absorbance in the 2 µm region. The working range [...] Read more.
A realistic implementation of an all-fiber CO2 sensor, using 74 cm of hollow core photonic crystal fiber (HC-PCF) as the cavity for light/gas interaction, has been implemented. It is based on CO2 absorbance in the 2 µm region. The working range is from 2% to 100% CO2 concentration at 1 atm total pressure and the response time obtained was 10 min. Depending on the concentration level, the sensor operates at one of three different wavelengths (2003.5 nm, 1997.0 nm and 1954.5 nm) to maintain a high sensitivity across all the working range. Full article
(This article belongs to the Special Issue Optical Sensors Using Microstructured and Photonics Crystal Fibers)
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