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Updated: Aug 3, 2026

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
Published on: December 22, 2015
Wide temperature-range Brillouin and Rayleigh optical-time-domain reflectometry in a dispersion-shifted fiber
Yongqian Li1, Fucai Zhang, Toshihiko Yoshino
1Department of Electronic Engineering, Gunma University, 1-5-1 Tenjin-Cho, Kiryu 376-8515, Japan. li@el.gunma-u.ac.jp
Abstract:
The temperature dependences of spontaneous Brillouin and Rayleigh scattering intensities in a dispersion-shifted fiber have been measured over a wide temperature range by optical-time-domain reflectometry. It was found that spontaneous Brillouin and Rayleigh intensities normalized by room-temperature values have linear dependences on temperature, with coefficients (0.26 +/- 0.02)%/degrees C and (0.015 +/- 0.002)%/degrees C in temperature ranges -27-819 and 29-827 degrees C, respectively. Experimental results have demonstrated that both kinds of scattering can be used for distributed high-temperature measurement.

