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We present a new optoelectronic architecture intended for chaotic opticalintensity generation. The principle relies on an electro-optic non-linear delaydynamics, which non linearity is performed by a 4-waves integrated opticsinterferometer involving 2 independent electro-optic modulation inputs. Thesetup allows both to have an ultra-fast dynamics up to several GHz frequencies,and potentially high dimensional chaos intended for encryption of optical dataat the physical layer. We have built a mathematical model of the system andanalyzed a number of its possible solutions: stable steady states, periodic andchaotic regimes. The experimental observations allowed to validate thedynamical model, through good qualitative agreements with the numericalsimulations.

Chaos g\'en\'er\'e par une non lin\'earit\'e 2D et une dynamique \`a retard