A new switching parameter varying optoelectronic delayed feedback model with computer simulation

Abstract

In this paper, a new switching parameter varying optoelectronic delayed feedback model is proposed and analyzed by computer simulation. This model is switching between two parameter varying optoelectronic delayed feedback models based on chaotic pseudorandom sequences. Complexity performance results show that this model has a high complexity compared to the original model. Furthermore, this model can conceal the time delay effectively against the auto-correlation function, delayed mutual information and permutation information analysis methods, and can extent the key space, which greatly improve its security.

Approximate Entropy and Sample Entropy: A Comprehensive Tutorial

“…While the presented algorithms were initially developed for clinical research, they later spread to diverse fields such as neuroengineering [ 35 ], visual pattern recognition [ 36 ], neuroinformatics [ 37 ], ecology [ 38 ], psychiatry [ 39 ], electronics [ 40 ], voice recognition [ 41 ] or finance [ 42 ]. As their application is increasing lately, in this paper we have presented a clear path for understanding the logic behind ApEn and SampEn to help researchers understand their foundations and correct application.…”

Two‐dimensional electro‐optic delayed feedback system with electrical and optical coupling

“…Chaotic optical signal can be generated based on the inner non-linear effects of semiconductor lasers [1][2][3], and can be generated based on the non-linear effects of external non-linear device as well [4][5][6]. Among all kinds of chaotic optic systems, the electro-optic delayed feedback system based on Mach-Zehnder (MZ) modulator has large Lyapunov dimension, high modulation speed, and good stability, which has been widely investigated [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

“…Therefore, it is not secure enough for optical network communication. In order to improve its security, some new optical systems based on this model are proposed in recent years [7][8][9][10][11][12][13][14][15][16][17]. Hu et al [7] proposed a kind of chaotic system based on electro-optical oscillator with varying gain coefficient.…”

“…All these models are based on only one semiconductor laser, and can conceal the time-delay more effectively than the original model. Another kind of method is based on coupling multiple chaotic systems [11][12][13][14][15][16][17][18]. Liu et al [11] coupling a digital logistic chaotic map with electro-optic chaotic system to suppress the time-delay signature.…”

“…Liu et al [11] coupling a digital logistic chaotic map with electro-optic chaotic system to suppress the time-delay signature. A new switching optoelectronic delayed feedback model is proposed in [12]. Liu et al [13] proposed a two-dimensional coupled electro-optic delayed feedback system with varying parameters.…”