TY - JOUR AU - Ravoori, Bhargava AU - Cohen, Adam B. AU - Setty, Anurag V. AU - Sorrentino, Francesco AU - Murphy, Thomas E. AU - Ott, Edward AU - Roy, Rajarshi TI - Adaptive synchronization of coupled chaotic oscillators JO - Phys. Rev. E VL - 80 IS - 5 SP - 056205 PY - 2009 DO - 10.1103/PhysRevE.80.056205 AB - We experimentally demonstrate and numerically simulate an adaptive method to maintain synchronization between coupled nonlinear chaotic oscillators, when the coupling between the systems is unknown and time-varying (e.g., due to environmental parameter drift). The technique is applied to optoelectronic feedback loops exhibiting high-dimensional chaotic dynamics. In addition to keeping the two systems isochronally synchronized in the presence of a priori unknown time-varying coupling strength, the technique provides an estimate of the time-varying coupling. ER -