Reconfigurable dynamic all-optical chaotic logic gate capable of performing delay storage

Abstract

The invention discloses a reconfigurable dynamic all-optical chaotic logic gate capable of performing delay storage. The reconfigurable dynamic all-optical chaotic logic gate comprises a vertical cavity surface emitting laser, a beam splitter, an optical isolator, a polarization beam splitter, a subtractor, a variable attenuator, a half-wave plate and a periodically poled lithium niobate crystal.According to the reconfigurable dynamic all-optical chaotic logic gate, the arbitrary switching between basic all-optical chaotic logic gate operations is achieved, effective delay storage can be performed, and specifically, any switching and delay storage of AND gate, NAND gate, OR gate, NOR gate, XOR gate and XNOR gate operations are achieved. The reconfigurable dynamic all-optical chaotic logicgate capable of performing delay storage can be popularized and applied to all-optical digital chaotic timing and combinatorial logic computing devices.

Description

technical field [0001] The invention relates to photonic devices, in particular to a reconfigurable dynamic all-optical chaotic logic gate capable of time-delay storage. Background technique [0002] It is well known that chaotic systems possess rich dynamical behaviors and are sensitive to perturbations and initial conditions. In recent years, there has been a new research direction in the application of chaos, which is to use the rich patterns inherent in chaotic systems to realize chaotic computing. Chaos computing has attracted the attention of experts because it provides a new reconfigurable logic operation scheme. In the chaotic system, by slightly changing the value of some parameters, the conversion between logic calculations can be easily realized. This provides a feasible method for realizing the dynamic logic computing system. During the logical calculation, the system structure itself changes dynamically. Therefore, compared with traditional logic devices, ch...

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Problems solved by technology

[0004] However, in the above methods, slight changes in some important parameters (such as pump current, optical injection energy and detuned injected light) will change the state of output polarization

At the same time, due to the instability of polarization conversion, the logic gates in the above method have poor stability

In addition, the above-mentioned implementation schemes of laser chaotic logic gates are all realized under static conditions, and do not make full use of the rich patterns of laser chaos to realize reconfigurable dynamic chaotic logic gates

At the same time, the above-mentioned basic logic gate operations can only be applied to combinatorial logic photonic devices, and cannot be extended to all-optical digital chaotic sequential logic devices (such as all-optical flip-flops, latches, etc.)

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