Preprint Article Version 1 This version is not peer-reviewed

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

Version 1 : Received: 30 October 2018 / Approved: 31 October 2018 / Online: 31 October 2018 (10:16:13 CET)

A peer-reviewed article of this Preprint also exists.

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. Sensors 2018, 18, 4393.

Journal reference: Sensors 2018, 18, 4393
DOI: 10.3390/s18124393

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.

Subject Areas

gas sensor; photonic crystal fiber; tunable laser; fiber Bragg Grating; carbon dioxide monitoring

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