title: High-sensitivity optical time-domain reflectometry based on Brillouin dynamic gratings in polarization maintaining fibers.
abstract: A high-sensitivity optical time-domain reflectometry based on Brillouin dynamic grating (BDG) is proposed and experimentally demonstrated in polarization-maintaining fibers, where a single-end access to a fiber under test is applied with co-propagation of pump and probe pulses for the operation of BDG. Distributed measurements of the BDG spectra are presented with 80 cm spatial resolution in 935 m range, showing strain and temperature sensitivities of 1.37 MHz/με and -57.48 MHz/°C, respectively.
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
mesh_terms: D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods*; D007834:Lasers; D054023:Lasers, Semiconductor; D008962:Models, Theoretical; D055100:Optical Fibers; D012031:Refractometry / Q000295:instrumentation / Q000379:methods; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted