Controllable all-optical stochastic logic gates and their delay storages based on the cascaded VCSELs with optical-injection

Abstract

Using the dynamical properties of the polarization bistability that depends on the detuning of the injected light, we propose a novel approach to implement reliable all-optical stochastic logic gates in the cascaded vertical cavity surface emitting lasers (VCSELs) with optical-injection. Here, two logic inputs are encoded in the detuning of the injected light from a tunable CW laser. The logic outputs are decoded from the two orthogonal polarization lights emitted from the optically injected VCSELs. For the same logic inputs, under electro-optic modulation, we perform various digital signal processing (NOT, AND, NAND, XOR, XNOR, OR, NOR) in the all-optical domain by controlling the logic operation of the applied electric field. Also we explore their delay storages by using the mechanism of the generalized chaotic synchronization. To quantify the reliabilities of these logic gates, we further demonstrate their success probabilities.

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

“…where t 0 = τ 1 orτ 2 , the meanings and mathematical expressions of other physical parameters are present in Ref. [18]. When the D-VCSEL are subject to the injection of the output x-PL and y-PL from the PPLN 1 crystal, we have:…”

“…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].…”

Nonlinear Dynamics of Exclusive Excited-State Emission Quantum Dot Lasers Under Optical Injection

“…Under external perturbations, semiconductor lasers (SLs) can exhibit various nonlinear dynamical behaviors, such as the period one (P1), period two (P2), multi-period (MP), and chaos (CO) etc. [1][2][3][4][5], which has attracted much attention due to their potential applications in photonic microwave amplifiers [6], optical frequency converters [7], wireless optical fiber communication [8], all-optical logic gates [9], laser Doppler velocimeters [10], secure optical communication, and random bit generation [11][12][13].…”

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

“…Vertical cavity surface emitting laser (VCSEL), as a microchip semiconductor laser, exhibits many advantages over edge emitting laser, in some areas such as low threshold current, single longitudinal mode operation, high modulation frequency, low cost and large-scale integration into twodimensional arrays. [7][8][9][10][11][12][13] There are two polarization components (PCs) in the VCSEL with the spin flip mode (SMF), [14] due to the weak material and cavity anisotropies. Much effort has been devoted to the observation of the polarizationbistability (PB) of the VCSEL subjected to different polarization light feedbacks and injection current sweep rates.…”

“…Several researches have been done to explore logic gates by using the chaotic synchronization between two semiconductor lasers [11][12][13][14][15] or the PB of the VCSEL [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] In 2013, according to a master-slave-response synchronization system of chaotic multiple-quantum-well lasers, Yan proposed the computing methods of chaotic XNOR, NOR, NOT logic gates, [11] and implemented optoelectronic NOR and XNOR logic gates by using parallel synchronization of three chaotic lasers. [13] Recently, different types of chaotic logic gates have been explored by using the PB of the optically injected VCSEL in different setups.…”