Mismatch of the pump parameters of coupled chaotic lasers and the signal recovery errors in the data transmission scheme based on these lasers

The pulse characteristics of a periodically pumped chaotic CO₂ laser are calculated numerically. The errors of the encoding-function recovery in the data transmission link based on two optically coupled chaotic CO₂ lasers are studied depending on the amplitude mismatch and pump modulation frequencies. It is shown that the recovery error is minimal when the pump parameters of a transmitter and a receiver are identical. It is also shown that the mismatch of the pump amplitudes of the receiver and transmitter affects the recovery error much weaker than the mismatch of their periods. The dependences of the recovery error on the signal modulation degree are found. It is found that the shape of the recovered encoding function is determined by the type of a deviated parameter.