Reconfigurable dynamic all-optical chaotic logic operations in an optically injected VCSEL

Abstract

In a chaotic system of vertical cavity surface emitting laser (VCSEL) with external optical-injection, we propose a novel implementation scheme for reconfigurable dynamic all-optical chaotic logic operations (AOCLOs). Under different key parameters, such as the bias current, the injection strength and the frequency detuning of the injected light field and the VCSEL, we also explore the evolutions of the polarization-bistability with the amplitude of the injected light field when the output of VCSEL is chaotic wave. According to the dynamic evolutions, we find out the optimal value of the frequency detuning that is considered as a control logic signal, and further implement different AOCLOs, such as AND, NAND, OR, NOR, XOR, and XNOR, by controlling the logic operation of the control logic signal between two logic inputs. Moreover, the ability to reconstruct these logic operations is demonstrated under relatively low noise strength of the spontaneous emission.

Parallel all-optical logic operations based on metasurface polarization optics

“…The results show that it perfectly matches the mechanism of Boolean logic operations by reasonably designing the phase profile. Thus, the framework of a bi-logic operator can be built using a microchip vertical-cavity surface-emitting laser, which is attractive in all-optical logic operations with polarization-bistability [24][25][26][27] . The proposed multiplex bi-logic operator features no alignment problems and suffers from negligible crosstalk with a single noninterleaved metasurface.…”

Reconfigurable and Storable Chaotic Logic Operations in Drive-Response VCSELs With Optical Feedback

“…In 2016, all-optical stochastic logic gates and their delay storages were successfully implemented based on generalized chaotic synchronization and polarization switch in system of the cascaded VCSELs with optical-injection [18]. In 2017, based on polarization bistability, the reconfigurable all-optical chaotic logic gates were firstly being successfully realized by the scheme for VCSEL subject the injection of light from tunable sampled grating distributed Bragg reflector laser [19]. In 2020, my research group use a simple technical scheme for the VCSEL subject the optical feedback to implement the reconfigurable optoelectronic chaotic logic gates [20].…”