Parameter Mismatches and Perfect Anticipating Synchronization in   bi-directionally coupled external cavity laser diodes
  We study perfect chaos synchronization between two bi-directionally coupled external cavity semiconductor lasers and demonstrate for the first time that mismatches in laser photon decay rates can explain the experimentally observed anticipating time in synchronization. 
E.M.Shahverdiev, S.Sivaprakasam and K.A.Shore