title: Tunable optical delays based on Brillouin dynamic grating in optical fibers.
abstract: We demonstrate a novel kind of tunable optical delays based on dynamic grating generated by Brillouin scattering in an optical fiber. An axial strain gradient is applied to a 15 m section of a polarizationmaintaining fiber, and the Brillouin reflection grating is generated position-selectively by controlling the optical frequencies of Brillouin pump waves. Tunable time delays of up to 132 ns are achieved with an 82 ns Gaussian pulse.
authors.affiliation: Dept of Physics, Chung-Ang University, Seoul, Korea. songky@cau.ac.kr
authors.forename: Kwang Yong
authors.initials: KY
authors.lastname: Song
authors.forename: Kwanil
authors.initials: K
authors.lastname: Lee
authors.forename: Sang Bae
authors.initials: SB
authors.lastname: Lee
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity