A laser chaos synchronous secure communication method and system based on reserve pool calculation

Abstract

The invention relates to a method and a system for laser chaotic synchronization and security communication based on reserve pool calculation, belonging to the technical field of laser chaos synchronization and security communication; ; The technical solution adopted to solve the above technical problems is: the third-party driving laser adopts the optical feedback method to generate chaotic laser, which is divided into two channels as the driving signal and output to the phase modulator and the ADC module respectively; the main laser adopts the chaotic phase modulation optical feedback method The chaotic carrier wave is generated, which is divided into two outputs, and one channel is transmitted to the reserve pool calculation module of the receiving end; the other channel of chaotic encrypted signal generated by superimposing the original information is transmitted to the receiving end through the optical fiber loop; the chaotic data after the ADC module is used as the reserve pool calculation. The input of the module, the training reserve pool makes the reserve pool calculation module synchronize with the main laser; the invention applies to secure communication.

Description

technical field [0001] The invention discloses a laser chaos synchronous secure communication method and system based on reserve pool calculation, and belongs to the technical field of reserve pool calculation and laser chaotic synchronous secure communication system in machine learning. Background technique [0002] The laser chaotic synchronous secure communication driven by a third-party laser theoretically has the advantages of high speed, long distance, and low bit error rate. Good synchronization effect, so the actual implementation conditions are harsh, it is difficult and extremely sensitive to changes in the internal and external parameters of the laser. [0003] Previously, researchers Ning Jiang et al. (Jiang N, Zhao AK, Liu S Q, et al. Chaossynchronization and communication in closed-loop semiconductor lasers subject to common chaotic phase-modulated feedback [J]. Optics Express, 2018, 26(25) :32404-32416.) proposed a scheme in which a third-party laser controls...

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Problems solved by technology

[0004] Researchers Ingo Fischer et al. (Fischer I, Vicente R, Buldu J M, et al. Zero-laglong-range synchronization via dynamical relaying [J]. Physical Review Letters, 2006, 97(12): 123902.) used a third-party laser The synchronization between the master and slave lasers is realized, but the structure still requires strict consistency of the parameters of the master and slave lasers, and in order to achieve complete synchronization with zero lag, it is necessary to strictly control the relationship between the single-item injection intensity and the mutual coupling intensity, and the control process is complicated. and difficult

[0005] Based on the above problems, some scholars have proposed to train a neural network with a high degree of matching with the transmitter parameters as a receiver, but the training weights of the neural network are difficult and the convergence speed is slow, which leads to a long process, so it is only a Ideal concept but difficult to realize in practical application

As a new machine learning method, reserve pool calculation simplifies the training process of neural network and solves the problems of difficult determination of neural network structure and complicated training algorithm. Therefore, this application proposes a method based on reserve pool calculation. Method and system for realizing laser chaos synchronous secure communication

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