3 June 2005 Strain-imposed fiber optic laser-based system for wide range temperature measurement applications
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Abstract
This paper focuses on optical fiber laser-based wide range temperature measurement applications, under circumstances where different strain values were applied to the chirped fiber Bragg grating at a fixed temperature and the uniform type IIA fiber Bragg grating was used temperature-tuned. This grating forms the end reflector in the laser cavity feedback configuration. Erbium doped fiber was used as the laser gain medium and was pumped by using light from a 1480 nm laser diode. The response of the sensor was achieved over the tunable-temperature range from 70°C to 500°C when a fixed strain value of 1000 με was applied to the chirped Bragg grating, with a root mean square error of 10°C, using linear fitting over the above measurement range.
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Jharna Mandal, Tong Sun, Kenneth T. V. Grattan, Andreas T. Augousti, Scott A. Wade, Stephen F. Collins, Gregory W. Baxter, Bernard Dussardier, Gerard Monnom, Rui T. Zheng, Nam Q. Ngo, "Strain-imposed fiber optic laser-based system for wide range temperature measurement applications", Proc. SPIE 5826, Opto-Ireland 2005: Optical Sensing and Spectroscopy, (3 June 2005); doi: 10.1117/12.606166; https://doi.org/10.1117/12.606166
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