Co-simulation of optical chaotic secure communication systems in MATLAB and OptiSystem

Liu Jinyang; Zhou Xuefang; Bi Meihua; Yang Guowei; Wang Tianshu

doi:10.12086/oee.2021.210146

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Liu J Y, Zhou X F, Bi M H, et al. Co-simulation of optical chaotic secure communication systems in MATLAB and OptiSystem[J]. Opto-Electron Eng, 2021, 48(9): 210146. doi: 10.12086/oee.2021.210146

Citation:

Liu J Y, Zhou X F, Bi M H, et al. Co-simulation of optical chaotic secure communication systems in MATLAB and OptiSystem[J]. Opto-Electron Eng, 2021, 48(9): 210146. doi: 10.12086/oee.2021.210146

Co-simulation of optical chaotic secure communication systems in MATLAB and OptiSystem

1.
School of Communication Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China
2.
National and Local Joint Engineering Research Center of Space Optoelectronics Technology, Changchun University of Science and Technology, Changchun, Jilin 130022, China

Fund Project: National Natural Science Foundation of China (61705055) and Zhejiang Provincial Key Research and Development Program (2019C01G1121168)

More Information

^*Corresponding author: Zhou Xuefang, E-mail: zhouxf@hdu.edu.cn

Received Date 06 May 2021

Revised Date 16 August 2021

Published Date 15 September 2021

Abstract

Abstract

An electro-optic intensity chaotic communication system is designed by combining two electro-optic delay feedback loops with parallel structures. By injecting chaos into chaos, a more complex chaotic waveform is generated to enhance the chaotic complexity and the communication system confidentiality. In this design, MATLAB and OptiSystem software are used to simulate the system, which solves the problem that OptiSystem software can't simulate the optical feedback loop. The mature laser and binary sequence generation modules in OptiSystem software provide energy and input signals for the system. The electro-optic delay feedback loops are realized by the MATLAB program, and the signal transmission in optical fibers is completed in the OptiSystem software. The article introduces how to use MATLAB and OptiSystem software to realize the co-simulation of chaotic systems. Numerical simulations show that the proposed method is feasible to simulate the optical feedback loop, and the simulation results are in good agreement with the theoretical values, which prove that the chaotic signal is generated.
- chaos /
- chaotic encryption /
- electro-optic delay /
- MATLAB /
- OptiSystem

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References

[1]	颜森林. 激光混沌并行串联同步及其在中继器保密通信系统中的应用[J]. 物理学报, 2019, 68(17): 170502. doi: 10.7498/aps.68.20190212 CrossRef Google Scholar Yan S L. Chaotic laser parallel series synchronization and its repeater applications in secure communication[J]. Acta Phys Sin, 2019, 68(17): 170502. doi: 10.7498/aps.68.20190212 CrossRef Google Scholar
[2]	吴琼琼, 马子洋, 李启华, 等. 高速混沌光通信研究进展[J]. 光通信技术, 2021, 45(1): 22-27. Google Scholar Wu Q Q, Ma Z Y, Li Q H, et al. Research progress of high speed chaotic optical communication[J]. Opt Commun Technol, 2021, 45(1): 22-27. Google Scholar
[3]	Argyris A, Syvridis D, Larger L, et al. Chaos-based communications at high bit rates using commercial fibre-optic links[J]. Nature, 2005, 438(7066): 343-346. doi: 10.1038/nature04275 CrossRef Google Scholar
[4]	Jacquot M, Lavrov R, Larger L. Nonlinear delayed differential optical phase feedback for high performance chaos communications[C]//Conference on Lasers and Electro-Optics 2010. San Jose, USA, 2010. doi: 10.1364/CLEO.2010.CFC6. Google Scholar
[5]	义理林, 柯俊翔. 混沌保密光通信研究进展[J]. 通信学报, 2020, 41(3): 168-181. Google Scholar Yi L L, Ke J X. Research progress of chaotic secure optical communication[J]. J Commun, 2020, 41(3): 168-181. Google Scholar
[6]	Yang Z, Yi L L, Ke J X, et al. Chaotic optical communication over 1000 km transmission by coherent detection[J]. J Lightwave Technol, 2020, 38(17): 4648-4655. doi: 10.1109/JLT.2020.2994155 CrossRef Google Scholar
[7]	刘小磊, 熊雪娟. 基于Optisystem的光电色散补偿技术的性能分析[J]. 电子测量技术, 2017, 40(11): 114-119. Google Scholar Liu X L, Xiong X J. Performance analysis of photoelectric dispersion compensation technology based on Optisystem[J]. Electr Measur Technol, 2017, 40(11): 114-119. Google Scholar
[8]	Ikeda K. Multiple-valued stationary state and its instability of the transmitted light by a ring cavity system[J]. Opt Commun, 1979, 30(2): 257-261. doi: 10.1016/0030-4018(79)90090-7 CrossRef Google Scholar
[9]	Kouomou Y C, Colet P, Larger L, et al. Mismatch-induced bit error rate in optical chaos communications using semiconductor lasers with electrooptical feedback[J]. IEEE J Quantum Electron, 2005, 41(2): 156-163. doi: 10.1109/JQE.2004.839686 CrossRef Google Scholar
[10]	Nguimdo R M, Colet P, Larger L, et al. Digital key for chaos communication performing time delay concealment[J]. Phys Rev Lett, 2011, 107(3): 034103. doi: 10.1103/PhysRevLett.107.034103 CrossRef Google Scholar
[11]	Hizanidis J, Deligiannidis S, Bogris A, et al. Enhancement of chaos encryption potential by combining all-optical and electrooptical chaos generators[J]. IEEE J Quantum Electron, 2010, 46(11): 1642-1649. doi: 10.1109/JQE.2010.2055837 CrossRef Google Scholar
[12]	Nguimdo R M, Colet P, Mirasso C. Electro-optic delay devices with double feedback[J]. IEEE J Quantum Electron, 2010, 46(10): 1436-1443. doi: 10.1109/JQE.2010.2050055 CrossRef Google Scholar
[13]	Shahzadi R, Anwar S M, Qamar F, et al. Secure EEG signal transmission for remote health monitoring using optical chaos[J]. IEEE Access, 2019, 7: 57769-57778. doi: 10.1109/ACCESS.2019.2912548 CrossRef Google Scholar
[14]	Li Q L, Chen D W, Bao Q, et al. Numerical investigations of synchronization and communication based on an electro-optic phase chaos system with concealment of time delay[J]. Appl Opt, 2019, 58(7): 1715-1722. doi: 10.1364/AO.58.001715 CrossRef Google Scholar
[15]	Wang L S, Mao X X, Wang A B, et al. Scheme of coherent optical chaos communication[J]. Opt Lett, 2020, 45(17): 4762-4765. doi: 10.1364/OL.390846 CrossRef Google Scholar
[16]	Nguimdo R M, Colet P. Electro-optic phase chaos systems with an internal variable and a digital key[J]. Opt Express, 2012, 20(23): 25333-25344. doi: 10.1364/OE.20.025333 CrossRef Google Scholar
[17]	Lavrov R, Jacquot M, Larger L. Nonlocal nonlinear electro-optic phase dynamics demonstrating 10 Gb/s chaos communications[J]. IEEE J Quantum Electron, 2010, 46(10): 1430-1435. doi: 10.1109/JQE.2010.2049987 CrossRef Google Scholar

Overview

Overview

Overview: With the increase in demand for communication capacity, speed, and confidentiality, optical fiber communication has become an important way of information transmission. However, during the transmission process, there is a risk of being eavesdropped on by illegal receivers. Therefore, it is very necessary to encrypt the signal transmitted in optical fibers. Chaotic secure communication is the physical hardware encryption based on chaotic signals. With the chaotic signal has the advantages of aperiodic, continuous broadband spectrum, noise-like, and unpredictable long-term, information is hidden in chaotic signals for transmission, and the transmitted information is demodulated by the chaotic waveform synchronized with the transmitter at the receiver. Chaotic secure communication has a great application prospect in the secure communication field and has attracted extensive attention from researchers at home and abroad.

Based on two parallel electro-optic delay feedback loops, an electro-optic intensity chaotic system is designed in this paper. By injecting chaos into chaos, more complex chaotic waveforms can be generated to enhance the chaotic complexity and the communication system confidentiality. In this design, MATLAB and OptiSystem are used to simulate the system, which solves the difficulty that OptiSystem could not simulate the optical feedback loop. Combining MATLAB's numerical calculation capabilities with OptiSystem's simulation capabilities, an intensity chaotic device with two electro-optic delay feedback loops has been successfully constructed. The mature laser and binary sequence generation modules in OptiSystem provide energy and input signals to the system. The electro-optic delay feedback loop is realized by the MATLAB program, and the signal transmission in the optical fiber link is completed in OptiSystem. The simulation results show that the generated chaotic sequence has amplitude randomness, and the high and low pulse amplitudes follow each other, which can effectively conceal information. The chaotic sequence at the transmitter and receiver has synchronization and robustness. In the case of no information loading, the chaotic sequence intensity at both ends completely fits y=x. When an external disturbance is introduced, the synchronization solution of the delayed chaotic dynamics at both ends can still be maintained well and it has a certain anti-interference ability. These properties ensure that the system could be used for information encryption operation effectively, and the relationships between the transmission distance and the chaos synchronization at both ends under different compensation situations have been studied. The simulation results are in good agreement with the theoretical values, which proves the feasibility of the chaotic generation method and provides ideas for the subsequent research and simulation on chaotic generation schemes.