Based on the polarization switching mechanism in an optically injected vertical cavity surface emitting laser (VCSEL), and new electro-optic modulation theory, we propose a novel approach to implement optoelectric logic gates. Here, two linearly polarized lights from output of are considered as outputs. Under modulation, one outputs is NOT operation with other one. With same input signal, perform various digital signal processing (AND, OR, XNOR, NAND, NOR XOR) optical domain, controlling...

According to the principle of complete chaos synchronization and theory Hilbert phase transformation, we propose a novel real-time multi-target ranging scheme by using chaotic polarization laser radar in drive-response vertical-cavity surface-emitting lasers (VCSELs). In scheme, ensure each component (PC) master VCSEL (MVCSEL) be synchronized steadily with that slave VCSEL, output x-PC y-PC from MVCSEL drive system those response are modulated linear electro-optic effect simultaneously....

Resistive pressure sensors are appealing due to having several advantages, such as simple reading mechanisms, construction, and quick dynamic response. Achieving a constantly changeable microstructure of sensing materials is critical for the flexible sensor remains difficulty. Herein, flexible, tunable resistive developed via simple, low-cost microsphere self-assembly graphene/carbon nanotubes (CNTs) solution drop coating. The uses polystyrene (PS) microspheres construct an interlocked dome...

In this work, we utilize three parallel optical reservoir computers to model dynamic systems, respectively. Here, the laser-elements in response laser array with both delay-time feedback and injection are utilized as nonlinear nodes realize chaotic (RCs). The dynamics of driving predictively learned by these RCs. We show that can reproduce self-feedback. Very small training errors for their predictions be realized optimization two key parameters such interval virtual nodes. Moreover, RCs...

Flexible pressure sensors still face difficulties achieving a constantly adaptable micronanostructure of substrate materials. Interlinked microcone resistive were fabricated by polydimethylsiloxane (PDMS) nanocone array. PDMS array was achieved the second transferring tapered polymethyl methacrylate (PMMA) structure. In addition, self-assembly 2D carbon nanotubes (CNTs) networks as conducting layer prepared low-cost, dependable, and ultrafast Langmuir−Blodgett (LB) process. self-assembled...

In this work, based on two parallel reservoir computers realized by the polarization components of optically pumped spin-VCSEL with double optical feedbacks, we propose fusion-prediction scheme for Mackey-Glass (MG) and Lorenz (LZ) chaotic time series. Here, direct prediction iterative results are fused in a weighted average way. Compared direct-prediction errors, errors appear great decrease. Their values far less than when iteration step-size no more 15. By optimization temporal interval...

In this work, with the mixing fractions being known in advance or unknown, schemes and theories for separations of two groups mixed optical chaotic signals are proposed detail, using VCSEL-based reservoir computing (RC) systems. Here, linearly combined many beams x-polarization components (X-PCs) Y-PCs emitted by optically pumped spin-VCSELs operation alone. Two parallel reservoirs performed X-PC Y-PC output spin-VCSEL both feedback injection. Moreover, we further demonstrate separation...

In this work, we utilize two cascade coupling modes (unidirectional and bidirectional coupling) to construct a four-layer deep reservoir computing (RC) system based on the coupled optically-pumped spin-VCSEL. such system, there are double sub-reservoirs in each layer, which formed by chaotic x-PC y-PC emitted spin-VCSEL layer. Under these modes, driving (D-Spin-VCSEL), as learning targets, predicted utilizing reservoirs. different parameter spaces, it is further explored that outputs of...

In this work, we present a novel four-channel coherent optical chaotic secure communication (COCSC) system, incorporating four simultaneous photonic reservoir computers in tandem with demodulation units. We employ quartet of reservoirs that capture the dynamics polarization components (PCs) emitted by driving QD spin-VCSEL. These are realized utilizing PCs corresponding Through these concurrent structures, facilitate high-quality wideband-chaos synchronization across pairs PCs. Leveraging...

For the dual-channel encryption system, based on polarization-division-multiplexing, we put forward a new control scheme for complete chaos synchronization by means of linear electro-optic (EO) effect. In scheme, chaotic quality each polarization (LP) mode component varies periodically with applied electric field. The variation regulation is as follows: Complete ↔ acute oscillation. With field fixed at certain value, robustness due to bias current and feedback strength improved greatly EO...

We propose a novel scheme of the real-time ranging for six orientational targets based on vertical cavity surface-emitting laser (VCSEL) network with three nodes. In scheme, we explore method to realize globally complete chaotic synchronization (GCCS) different channel delays. Under GCCS, use polarization radars Hilbert transform theory. It is found that has good performance, such as stability and high accuracy, absolute errors reach millimeter magnitude. Moreover, all relative are small...

We present a novel scheme for the accurate ranging multi-region in rectangular-shape target using numbers of chaotic x polarization components multiple parallel optically pumped spin-VCSELs with optical injection, where these possess attractive features uncorrelation time and space under different injection strengths, fast dynamic femtosecond magnitude. Utilizing features, to position vectors targets can be achieved by correlating multi beams time-delay reflected radar probe waveforms their...

We have developed a theory model for three-element laser array where three lasers are laterally coupled using the mode and Maxwell equations. New chaotic synchronization properties been observed systematically in master-slave configuration, consisting of driving with self-feedback response subjected to parallel injection or cross injection. Under injection, dynamic evolutions high-quality complete between elements different parameter spaces seriously depend on elements, such as one, two all...

In this work, we propose a chaotic secure communication system with optical time division multiplexing (OTDM), using two cascaded reservoir computing systems based on multi beams of polarization components emitted by four optically pumped VCSELs. Here, each level layer includes parallel reservoirs, and contains sub-reservoirs. When the reservoirs in first-level are well trained training errors far less than 0.1, group masking signals can be effectively separated. second output for...

We investigate the evolution of nonlinear dynamic behaviors two polarization components (x-PC and y-PC), as well interplay bistability, frequency detuning injection strength in vertical cavity surface emitting laser with optical injection. Specifically, by encoding logic inputs one clock input amplitude light from a sampled grating distributed Bragg reflector laser, decoding output responses x-PC y-PC emitted we demonstrate parallel data-selection computing. The correct encoded PCs response...

We investigate the evolution of nonlinear dynamic behaviors two polarization components (x-PC and y-PC), as well interplay bistability injection strength in vertical-cavity surface-emitting laser (VCSEL) with polarization-preserved optical injection. explore a new threshold mechanism to judge logic outputs encoded different x-PC y-PC emitted by VCSEL demonstrate implementations parallel chaotic reset-set flip-flop operations toggle that are synchronized clock signal response for short 1 ns...

A theoretical model characterizing a recent experiment of dual-channel optical chaotic communication has been presented, and is proved to be reasonable by comparing the numerical simulation with experimental results. After deducing transmission function semiconductor laser small-signal analysis, how toreasonably select system parameters in order realize effective signal specified. Moreover, cross talk between two channels analyzed quantitatively. For 250MHz modulation message, nume rical...