Zou Weiwen, He Zuyuan, Song Kwang-Yong, Hotate Kazuo
Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan.
Opt Lett. 2009 Apr 1;34(7):1126-8. doi: 10.1364/ol.34.001126.
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.
