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The experiment for measuring Brillouin shift of optical fiber was set up. The Brillouin shift of a dispersion-shifted fiber was experimentally investigated in the range of 20 to 820 ℃, and the data was fitted. When the environment temperature changes in a wide range, the measured data when fitted by a linear relation, will bring about large errors. We set out our study on the basis of the structure and material properties of fused silica, including the thermal expansion coefficient, the density, the refractive index, the Young’s modulus, and the Poisson’s ratio. The mathematical model for the temperature dependence of each of the parameters was built up. Based on the relationships between Brillouin shift and the material properties, the Brillouin shift has been formulated as a second-order polynomial of temperature over a wide temperature range. Compared with our experimental results, the theoretical results are in good agreement, which lays a foundation for the wide-range Brillouin distributed temperature sensor.
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Keywords:
- optical fiber /
- high temperature sensing /
- Brillouin scattering /
- Brillouin shift
[1] Alahbabi M N, Cho Y T, Newson T P 2005 Opt. Soc. of Am. 22 1321
[2] Yu Q R, Bao X Y, Ravet F, Chen L 2005 Opt. Lett. 30 2215
[3] Song M P 2004 Acta Opt. Sin. 24 1111(in Chinese)[宋牟平 2004 光学学报 24 1111]
[4] Kwang Y S, Kazuo Hotate 2006 IEEE Photonic Technol. Lett. 18 499
[5] Guo S F, Lin W X, Lu Q S, Chen S, Lin Z Z, Deng S Y, Zhu Y X 2007 Acta Phys. Sin. 56 2218(in Chinese) [郭少峰、林文雄、陆启生、陈 燧、林宗志、邓少永、朱永祥2007 56 2218]
[6] Hasi W L J, Lü Z W, Li Q, He W M 2007 Chin. Phys. 16 154
[7] Hu X D, Hu X T, Liu W H 1999 Tran. Tianjin University 32 678(in Chinese)[胡晓东、胡晓唐、刘文晖1999天津大学学报 32 678]
[8] Duncan T (Translated by Liu Y G, Zhou X G)1993 Advanced Physics(Hong Kong:Pilot Pub Services)pp136—137 (in Chinese)[邓 肯著 刘一贯、周显光译 1993 高级物理学(香港:导师出版社)第136—137页]
[9] Narottam P B, Doremus R H 1986 Handbook of Glass Properties (New York: Academic Press)
[10] Max-planck Institut für silikatforschung, Würzburg 1970 J. Non-Cryst. Solids 5 123
[11] Marx J W, Sivertsen J M 1953 Appl. Phys. 24 81
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[1] Alahbabi M N, Cho Y T, Newson T P 2005 Opt. Soc. of Am. 22 1321
[2] Yu Q R, Bao X Y, Ravet F, Chen L 2005 Opt. Lett. 30 2215
[3] Song M P 2004 Acta Opt. Sin. 24 1111(in Chinese)[宋牟平 2004 光学学报 24 1111]
[4] Kwang Y S, Kazuo Hotate 2006 IEEE Photonic Technol. Lett. 18 499
[5] Guo S F, Lin W X, Lu Q S, Chen S, Lin Z Z, Deng S Y, Zhu Y X 2007 Acta Phys. Sin. 56 2218(in Chinese) [郭少峰、林文雄、陆启生、陈 燧、林宗志、邓少永、朱永祥2007 56 2218]
[6] Hasi W L J, Lü Z W, Li Q, He W M 2007 Chin. Phys. 16 154
[7] Hu X D, Hu X T, Liu W H 1999 Tran. Tianjin University 32 678(in Chinese)[胡晓东、胡晓唐、刘文晖1999天津大学学报 32 678]
[8] Duncan T (Translated by Liu Y G, Zhou X G)1993 Advanced Physics(Hong Kong:Pilot Pub Services)pp136—137 (in Chinese)[邓 肯著 刘一贯、周显光译 1993 高级物理学(香港:导师出版社)第136—137页]
[9] Narottam P B, Doremus R H 1986 Handbook of Glass Properties (New York: Academic Press)
[10] Max-planck Institut für silikatforschung, Würzburg 1970 J. Non-Cryst. Solids 5 123
[11] Marx J W, Sivertsen J M 1953 Appl. Phys. 24 81
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