Mejia Quintero, S.M.; Guedes Valente, L.C.; de Paula Gomes, M.S.; Gomes da Silva, H.; Caroli de Souza, B.; Morikawa, S.R.K. All-Fiber CO2 Sensor Using Hollow Core PCF Operating in the 2 µm Region. Sensors2018, 18, 4393.
Mejia Quintero, S.M.; Guedes Valente, L.C.; de Paula Gomes, M.S.; Gomes da Silva, H.; Caroli de Souza, B.; Morikawa, S.R.K. All-Fiber CO2 Sensor Using Hollow Core PCF Operating in the 2 µm Region. Sensors 2018, 18, 4393.
Mejia Quintero, S.M.; Guedes Valente, L.C.; de Paula Gomes, M.S.; Gomes da Silva, H.; Caroli de Souza, B.; Morikawa, S.R.K. All-Fiber CO2 Sensor Using Hollow Core PCF Operating in the 2 µm Region. Sensors2018, 18, 4393.
Mejia Quintero, S.M.; Guedes Valente, L.C.; de Paula Gomes, M.S.; Gomes da Silva, H.; Caroli de Souza, B.; Morikawa, S.R.K. All-Fiber CO2 Sensor Using Hollow Core PCF Operating in the 2 µm Region. Sensors 2018, 18, 4393.
Abstract
A realistic implementation of an all-fiber CO2 sensor, using 74 cm of hollow core PCF fiber 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. The response time obtained was 10 min. The use of an FBG tuned fiber ring laser, specifically designed for this application, is discussed and preliminary results with this laser are also presented.
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