In phase and anti-phase syncronization of coupled homoclinic oscillators
  We numerically investigate the dynamics of a closed chain of unidirectionally coupled oscillators in a regime of homoclinic chaos. The emerging synchronization regimes show analogies with the experimental behavior of a single chaotic laser subjected to a delayed feedback 
I. Leyva, E. Allaria, S. Boccaletti, F. T. Arecchi