Chaotic Laser “Broadcast-Star” Synchronization Network and Its Application in Logic Gates

Abstract

Abstract A novel network of “broadcast-star” constituted by a few of injection semiconductor laser cells and its synchronization in chaos are presented to apply in logic gates. Chaotic “broadcast-star” synchronization network is achieved in numerical simulation, where a broadcast using an injected laser drives three response systems with three injected lasers as three “stars” to achieve synchronization between the broadcast and stars while the “stars” obtain synchronization between themselves. The synchronization network model and equation are demonstrated. And logic controlling principle and equation are deduced. We create theoretically the constructions of fundamental gates based on the synchronization network in the “stars” and define their computational principle. Logic gate cell or logic computation can be implemented via controlling logic input and output to the system to synchronize or desynchronize appropriately the chaotic states of twin stars. We present and emulate a lot of all-optical XNOR, NOR, NOT, optoelectronic and combinational optoelectronic logic gates via the optical or optoelectronic modulation while we introduce these logic computational methods. Finally, we analyzed effects of resynchronization and desynchronization on logic detection in a practical implementation of the system. Results show the feasibility of the method.