Synchronized Random Bit Sequences Generation Based on Analog-Digital Hybrid Electro-Optic Chaotic Sources

Zhao, Zexi; Cheng, Mengfan; Luo, Chenkun; Deng, Lei; Zhang, Minming; Fu, Songnian; Tang, Ming; Shum, Ping; Liu, Deming

doi:10.1109/jlt.2018.2868498

Cited by 19 publications

(9 citation statements)

References 26 publications

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“…The nonlinear dynamics of semiconductor lasers (SLs) [1][2][3][4][5][6] has received extensive attention thanks to their high complex dynamical behaviors and the widespread application in fields such as random bit generation [7,8], reservoir computing [9,10], chaos-based optical communications [11][12][13][14], chaotic radar [15,16], and other relevant areas [17][18][19]. Therefore, an in-depth investigation and analysis of the different dynamical regimes is very crucial for the parameter optimization and application exploration in research.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Nonlinear Dynamics Based on Spin-VCSELs with Optical Feedback

Song

Xie

et al. 2021

Photonics

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In this paper, the nonlinear dynamics of a novel model based on optically pumped spin-polarized vertical-cavity surface-emitting lasers (spin-VCSELs) with optical feedback is investigated numerically. Due to optical feedback being the external disturbance component, the complex nonlinear dynamical behaviors can be enhanced and the regions of different nonlinear dynamics in size can be extended with appropriate parameters of spin-VCSELs. According to the equations of the modified spin-flip model (SFM), the comparison of bifurcation diagrams is first presented for the clear presentation of different routes to chaos. Meanwhile, numerous bifurcation diagrams in color are illustrated to demonstrate the rich dynamical regimes intuitively, and the crucial effects of optical feedback strength, feedback delay, linewidth enhancement factor, and spin-flip relaxation rate on the region evolvement of complex dynamics of the proposed model are revealed to investigate the dependence of dynamical behaviors on external and internal parameters when the optical feedback scheme is introduced. These parameters play a remarkable role in enhancing the mechanism of complex dynamic oscillations. Furthermore, utilizing combination with time series, power spectra, and phase portraits, the various dynamical behaviors observed in the bifurcation diagram are simulated numerically. Correspondingly, the powerful measure 0–1 test is employed to distinguish between chaos and non-chaos.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Nonlinear Dynamics Based on Spin-VCSELs with Optical Feedback

Song

Xie

et al. 2021

Photonics

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“…The analog part can generate broadband signals with high dynamical complexity and the digital part establishes the robust long-distance synchronization between two parties for its inherent resistance to the interference of noise [24]. Owing to the hybrid structure, the chaos source shows its potential to be applied in radar and random bit sequences generation [25], [26]. We apply the electro-optic chaos source, combined with CS, to construct a robust and efficient image encryption scheme.…”

Section: Introductionmentioning

confidence: 99%

An Image Encryption Scheme Based on Hybrid Electro-Optic Chaotic Sources and Compressive Sensing

et al. 2019

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In this paper, a novel image encryption scheme based on analog-digital hybrid electro-optic chaotic sources and compressive sensing is proposed. Distinguished from other existing chaos-based encryption schemes, analog-digital hybrid electro-optic chaotic sources are utilized, in which the synchronization of chaotic systems can be achieved by transmitting binary digital bits. The robustness of the encryption scheme can be significantly improved and the theoretical transmission distance will be much longer because of digital chaos synchronization. Moreover, owing to the compression of compressive sensing and the sensitivity to initial values of chaotic sources, the proposed scheme can greatly reduce the amount of data and strengthen safety. Exhaustive simulations and analysis demonstrate that the proposed scheme is of good peculiarities such as high efficiency, good robustness and security.

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“…A study on the biorhythmic behavior and its control in an optoelectronic oscillator was presented in [24]. From the viewpoint of engineering, some research studies have focused on the performance enhancement of the system for random number generation, optical chaotic secure communication, chaotic image encryption, optical secret communication, and so on [25][26][27][28][29][30][31]. It is noted that chaotic dynamical properties such as high complexity and wide chaotic parameter range are strongly required in some scenarios, including secure communication and random number generation.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Ikeda Time Delay System by Breaking the Symmetry of Sine Nonlinearity

Gao

2019

Complexity

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In the present contribution, an asymmetric central contraction mutation (ACCM) model is proposed to enhance the Ikeda time delay system. The modified Ikeda system model is designed by introducing a superimposed tanh function term into the sine nonlinearity term. Stability and Hopf bifurcation characteristics of the system are analyzed theoretically. Numerical simulations, carried out in terms of bifurcation diagrams, Lyapunov exponents spectrum, phase portraits, and two-parameter (2D) largest Lyapunov exponent diagrams are employed to highlight the complex dynamical behaviors exhibited by the enhanced system. The results indicate that the modified system has rich dynamical behaviors including limit cycle, multiscroll hyperchaos, chaos, and hyperchaos. Moreover, as a major outcome of this paper, considering the fragile chaos phenomenon, the ACCM-Ikeda time delay system has better dynamical complexity and larger connected chaotic parameter spaces (connectedness means that there is no stripe corresponding to nonchaotic dynamics embedded in the chaos regions).

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Synchronized Random Bit Sequences Generation Based on Analog-Digital Hybrid Electro-Optic Chaotic Sources

Cited by 19 publications

References 26 publications

Numerical Analysis of Nonlinear Dynamics Based on Spin-VCSELs with Optical Feedback

Numerical Analysis of Nonlinear Dynamics Based on Spin-VCSELs with Optical Feedback

An Image Encryption Scheme Based on Hybrid Electro-Optic Chaotic Sources and Compressive Sensing

Enhancing Ikeda Time Delay System by Breaking the Symmetry of Sine Nonlinearity

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