Synchronization of Two and Three Optoeletronic Oscillators Operating in   Chaotic Regime: Numerical Simulations and Schemes for Secure Communication
  In this work we show a strategy for synchronization of three optoelectronic oscillators (OEO) operating in chaotic regime. Two applications of synchronized OEOs in secure communications are considered. In the first one the OEO is used to produce a pseudo-random bit sequence. The second application is an optical setup for secure transmission of sampled analog signals. Using numerical simulations, we calculated the bit error rate taking into account parameter mismatch noise and Gaussian noise in the input optical power. The conditions for error rate of up to 15% during key generation are shown. 
G. L. de Oliveira and R. V. Ramos
physics.optics nlin.CD quant-ph