title: Wideband chaos generation using a delayed oscillator and a two-dimensional nonlinearity induced by a quadrature phase-shift-keying electro-optic modulator.
abstract: We present a new optoelectronic architecture intended for chaotic optical intensity generation. The principle relies on an electro-optic nonlinear delay dynamics, where the nonlinearity originates from an integrated four-wave optical interferometer, involving two independent electro-optic modulation inputs. Consequently, the setup involves both two-dimensional nonlinearity and dual-delay feedback dynamics, which results in enhanced chaos complexity of particular interest in chaos encryption schemes. The generated chaos observed with large feedback gains has a bandwidth ranging from 30 kHz to 13 GHz and is confirmed by numerical simulations of the proposed dynamical model and bifurcation diagram calculation.
authors.affiliation: FEMTO-ST Institute (UMR CNRS 6174), Optics Department, P. M. Duffieux, 16 Route du Gray, 25030 Besançon Cedex, France.
authors.forename: Mourad
authors.initials: M
authors.lastname: Nourine
authors.forename: Yanne K
authors.initials: YK
authors.lastname: Chembo
authors.forename: Laurent
authors.initials: L
authors.lastname: Larger