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24 August 2009 Study of temperature sensing in a novel fattened electric arc induced LPFG
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Abstract
We propose a temperature sensor based on dispersion shifted long period fiber grating (LPFG) fabricated with the fattening method, using electric arc discharges from a commercial fusion splicer machine. The fattened LPFG are centered at 1524 and 1550 nm, respectively. A temperature characterization in terms of the transmitted spectrum is realized with a pumped Er+3 doped fiber as the light source. The less than 3 mm in length fattened LPFG reached a sensitivity of 72 pm/°C between a temperature range of (25-500°C). Temperature stability was observed among the temperature range of (25-200°C), result in agreement with our previous studies. From up to 200°C sensing is observed as temperature increases. To apply this LPFG as a temperature sensor, sensing was measured as voltage signal outputs with repeatable results. This sensor is a high temperature resistant device because non deterioration of its properties was observed, and can find useful applications when temperature stability may be needed or the sensing requirements are desirable.
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R. I. Mata-Chávez, J. M. Estudillo-Ayala, R. Rojas-Laguna, E. Vargas-Rodríguez, A. Martínez-Rios, I. Torres-Gómez, D. Monzón-Hernandez, M. Trejo-Duran, and J. R. Pérez-Chimal "Study of temperature sensing in a novel fattened electric arc induced LPFG", Proc. SPIE 7430, Laser Beam Shaping X, 743014 (24 August 2009); https://doi.org/10.1117/12.826502
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