Discrete vector light bullets in coupled <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.svg" display="inline" id="d1e629"><mml:msup><mml:mrow><mml:mi>χ</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:math> nonlinear cavities

We consider coupled weakly birefringent cavities filled-in with nonlinear Kerr material and subject to linearly polarized optical injection. Light propagation in such a system is described by of discrete Lugiato–Lefever-type equations for each linear polarization component the electric field into cavity, cross-phase modulation terms neighboring waveguides overlap integrals. demonstrate that this supports stable three-dimensional vector localized structures often called light bullets. both anomalous normal dispersion show it results generation of, respectively, bright dark Due multistability system, we demonstrated coexisting bullets at peaks as different predominantly circular. have shown chaotic spatio-temporal dynamics can be realized even an injection strengths which distribution stationary increasing coupling strength C between cavities.