title: Distributed characterization of localized and stationary dynamic Brillouin gratings in polarization maintaining optical fibers.
abstract: We experimentally generate localized and stationary dynamic Brillouin gratings in a 5 m long polarization maintaining fiber by phase-modulation of the pumps with a pseudo-random bit sequence. The dynamic Brillouin gratings are characterized in terms of length, bandwidth, group delay and group delay ripple, optical signal-to-noise ratio and peak to sidelobe ratio by measuring the distribution of the complex reflected signal along the fiber through swept-wavelength interferometry. By numerical processing, the performance of an optimal modulation format enabling null off-peak reflections are estimated and compared to the pseudo-random bit sequence case.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Chiarello
authors.forename: Dipankar
authors.initials: D
authors.lastname: Sengupta
authors.forename: Luca
authors.initials: L
authors.lastname: Palmieri
authors.forename: Marco
authors.initials: M
authors.lastname: Santagiustina