All-Fiber CO2 Sensor Using Hollow Core PCF Operating in the 2 µm Region

Autor:	Sully Milena Mejia Quintero, Luiz Carlos Guedes Valente, Marcos Sebastião de Paula Gomes, Hugo Gomes da Silva, Bernardo Caroli de Souza, Sergio R. K. Morikawa
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	gas sensor photonic crystal fiber tunable laser fiber bragg grating carbon dioxide monitoring Chemical technology TP1-1185
Zdroj:	Sensors, Vol 18, Iss 12, p 4393 (2018)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s18124393
Popis:	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.
Databáze:	Directory of Open Access Journals
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