title: Observation of narrowband intrinsic spectra of Brillouin dynamic gratings.
abstract: We experimentally demonstrate that the reflection spectrum of a Brillouin dynamic grating in a polarization-maintaining fiber can be much narrower than the intrinsic linewidth of the stimulated Brillouin scattering, matching well with the theory of a fiber Bragg grating in terms of the linewidth and the reflectivity. A 3 dB bandwidth as narrow as 10.5 MHz is observed with the Brillouin dynamic grating generated in a 9 m uniform fiber.
authors.affiliation: Department of Physics, Chung-Ang University, Seoul, 156-756 South Korea. songky@cau.ac.kr
authors.forename: Kwang Yong
authors.initials: KY
authors.lastname: Song
authors.forename: Hyuk Jin
authors.initials: HJ
authors.lastname: Yoon