Complete phase and amplitude synchronization of broadband chaotic optical fields generated by semiconductor lasers subject to optical injection.

A direct experimental observation of phase synchronization, amplitude synchronization, and frequency locking for the high-frequency broadband chaotic optical fields of the transmitter and the receiver is demonstrated in a fully optical system, where its chaotic optical wave form is generated through the high-speed nonlinearity of semiconductor lasers subject to optical injection. This experimentally achieved chaotic synchronous scenario is verified as identical chaos synchronization by observing several key characteristics of chaos synchronization in this system. The observation at the frequency detuning, the phase sensitivity, and the effect of mismatch at the injection strength from the master laser and match at the laser output power is in good agreement with the theoretical analysis of this system.