Erbium-doped fiber ring laser sensor for high temperature measurements based on a regenerated fiber Bragg grating |
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| Authors: | Runtao Yang Yumin Zhang Xiaoping Lou Mingli Dong |
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| Affiliation: | 1. School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei, China;2. Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Key Laboratory of Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing, China;3. Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Key Laboratory of Optoelectronic Measurement Technology, Beijing Information Science and Technology University, Beijing, China |
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| Abstract: | This article presents an erbium-doped fiber ring laser for high temperature measurement with high accuracy. The proposed laser sensor employs a regenerated fiber Bragg grating (RFBG) as a sensor element. Through thermal treatments, the RFBG with enhanced thermal resistance was obtained. The laser emission optical spectrum presents good performance with a high optical signal-to-noise ratio of 58dB. Experimental results demonstrate a wavelength sensitivity to the temperature is 15.5 pm/ºC with the temperature range from 300ºC to 900ºC, and the correlation coefficient is 0.999. The results prove it is able to provide potential applications in high temperature measurement. |
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| Keywords: | Fiber laser signal-to-noise ratio temperature measurement regenerated fiber Bragg grating |
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