title: Correlation-based distributed measurement of a dynamic grating spectrum generated in stimulated Brillouin scattering in a polarization-maintaining optical fiber.
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.
authors.affiliation: Department of Electrical Engineering and Information Systems, The University of Tokyo, Tokyo, Japan. zou@sagnac.t.u-tokyo.ac.jp
authors.forename: Weiwen
authors.initials: W
authors.lastname: Zou
authors.forename: Zuyuan
authors.initials: Z
authors.lastname: He
authors.forename: Kwang-Yong
authors.initials: KY
authors.lastname: Song
authors.forename: Kazuo
authors.initials: K
authors.lastname: Hotate