14 May 2018 Intracavity absorption gas sensor in the near-infrared region by using a tunable erbium-doped fiber laser based on a Hi-Bi FOLM
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Abstract
We report an experimental study erbium-doped fiber laser for gas pressure detection in the L-band wavelength region by laser intracavity absorption spectroscopy. By using a high-birefringence fiber optical loop mirror as spectral filter within the ring cavity laser, the wavelength of the generated laser line is finely selected and tuned in a range of ~10 nm in order to select the wavelength where the gas absorption line is exhibited. Experimental results for detection of CO2 pressure with absorption at 1573.2 nm are shown and discussed. The proposed fiber laser sensor exhibits reliability and stability for gas detection with absorption in the L-band such as CO2, CO, and H2S.
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R. I. Álvarez-Tamayo, R. I. Álvarez-Tamayo, M. Durán-Sánchez, M. Durán-Sánchez, A. Barcelata-Pinzón, A. Barcelata-Pinzón, P. Prieto-Cortés, P. Prieto-Cortés, A. F. Rodríguez-Berlanga, A. F. Rodríguez-Berlanga, A. A. Castillo-Guzmán, A. A. Castillo-Guzmán, G. Salceda-Delgado, G. Salceda-Delgado, R. Selvas-Aguilar, R. Selvas-Aguilar, } "Intracavity absorption gas sensor in the near-infrared region by using a tunable erbium-doped fiber laser based on a Hi-Bi FOLM", Proc. SPIE 10654, Fiber Optic Sensors and Applications XV, 1065413 (14 May 2018); doi: 10.1117/12.2305033; https://doi.org/10.1117/12.2305033
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