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Updated: Jun 24, 2026
High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
Published on: September 22, 2017
Correlation-based distributed measurement of a dynamic grating spectrum generated in stimulated Brillouin scattering
Weiwen Zou1, Zuyuan He, Kwang-Yong Song
1Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan. zou@sagnac.t.u-tokyo.ac.jp
Abstract:
We study the principle of correlation-based distributed generation and readout of dynamic grating spectrum generated in stimulated Brillouin scattering in a polarization-maintaining optical fiber. The experimental validation is demonstrated by applying synchronous sinusoidal frequency modulations to two orthogonally polarized laser sources that serve as the Brillouin pump-probe light and readout light of the dynamic grating, respectively. Temperature-induced opposite changes in the Brillouin frequency shift and in the birefringence-determined optical frequency deviation are clearly observed with 1.2 m spatial resolution and a 110 m measurement range.
