title: Chaos synchronization among orthogonally polarized emissions in a dual-polarization laser.
abstract: We report on the experimental observations of chaos synchronizations among orthogonally polarized emissions in a dual-polarization laser. With a three-mode scheme with a single mode in one polarization and two modes in orthogonal polarizations, synchronization was achieved by the cross-saturation dynamics of population inversions when one of the dual-polarized emissions was subjected to external perturbations, i.e., self-mixing modulation or optical fiber feedback. In-phase synchronization or lag synchronization among orthogonally polarized emissions was achieved depending on the degree of cross saturation in the self-mixing modulation. Synchronization of random bursting was observed in the fiber feedback, in which two chaotic-spiking modes in one polarization with anticorrelated intensity variations synchronize the remaining mode in the orthogonal polarization cooperatively with their total intensity variation. Information sender-mediator-receiver relationships among modes, which represent the dynamical roles of individual modes for establishing the observed three types of collective synchronizations, were identified in terms of an information circulation analysis.
authors.affiliation: Department of Human and Information Science, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa, 259-1292 Japan.
authors.forename: Kenju
authors.initials: K
authors.lastname: Otsuka
authors.forename: Kana
authors.initials: K
authors.lastname: Nemoto
authors.forename: Koji
authors.initials: K
authors.lastname: Kamikariya
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Miyasaka
authors.forename: Jing-Yuan
authors.initials: JY
authors.lastname: Ko
authors.forename: Chi-Ching
authors.initials: CC
authors.lastname: Lin