Ultra-wideband chaotic optical communication based on electro-optic differential feedback loop
A differential feedback electro-optical phase chaotic system is proposed to generate ultra-wideband optical chaos and realize high-speed long-distance chaotic communication. The nonlinear dynamics of this differential feedback loop are studied in detail. The numerical results show, firstly, in terms...
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| Published in | Optics communications Vol. 545; p. 129729 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
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Elsevier B.V
15.10.2023
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| Abstract | A differential feedback electro-optical phase chaotic system is proposed to generate ultra-wideband optical chaos and realize high-speed long-distance chaotic communication. The nonlinear dynamics of this differential feedback loop are studied in detail. The numerical results show, firstly, in terms of chaos complexity, the highest permutation entropy of 0.993 and the largest spectral entropy of 0.945 are achieved. Regarding the key hiding, the time delay signature of phase chaos on both the autocorrelation function and delayed mutual information can be completely suppressed, so security can be guaranteed. Secondly, the maximum bandwidth of the radio spectrum is 46.75 GHz in the range of 50 GHz, and the minimum flatness is 1.62 dB/GHz. Finally, the reception of format-transparent messages can be realized by combining co-drive synchronization and coherent demodulation. The 50 GBaud QPSK signal can transmit 2400 km and the 25 GBaud 16 QAM signal can transmit 1500 km at an OSNR of 25 dB. This system realizes ultra-wideband high-complexity chaos and chaotic communication, which can greatly improve the security, transmission distance, and transmission rate of chaotic optical communication.
•High complexity and ultra-wideband electro-optical differential feedback chaos generation.•The time delay signature (TDS) of the optical chaos is suppressed.•Chaotic synchronization based on laser co-drive injection.•High-speed and long-distance secure optical chaotic communication. |
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| AbstractList | A differential feedback electro-optical phase chaotic system is proposed to generate ultra-wideband optical chaos and realize high-speed long-distance chaotic communication. The nonlinear dynamics of this differential feedback loop are studied in detail. The numerical results show, firstly, in terms of chaos complexity, the highest permutation entropy of 0.993 and the largest spectral entropy of 0.945 are achieved. Regarding the key hiding, the time delay signature of phase chaos on both the autocorrelation function and delayed mutual information can be completely suppressed, so security can be guaranteed. Secondly, the maximum bandwidth of the radio spectrum is 46.75 GHz in the range of 50 GHz, and the minimum flatness is 1.62 dB/GHz. Finally, the reception of format-transparent messages can be realized by combining co-drive synchronization and coherent demodulation. The 50 GBaud QPSK signal can transmit 2400 km and the 25 GBaud 16 QAM signal can transmit 1500 km at an OSNR of 25 dB. This system realizes ultra-wideband high-complexity chaos and chaotic communication, which can greatly improve the security, transmission distance, and transmission rate of chaotic optical communication.
•High complexity and ultra-wideband electro-optical differential feedback chaos generation.•The time delay signature (TDS) of the optical chaos is suppressed.•Chaotic synchronization based on laser co-drive injection.•High-speed and long-distance secure optical chaotic communication. |
| ArticleNumber | 129729 |
| Author | Ji, Yuefeng Zhang, Yu Wang, Hongxiang Yu, Meitong |
| Author_xml | – sequence: 1 givenname: Meitong surname: Yu fullname: Yu, Meitong organization: The State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China – sequence: 2 givenname: Hongxiang surname: Wang fullname: Wang, Hongxiang email: wanghx@bupt.edu.cn organization: The State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China – sequence: 3 givenname: Yuefeng surname: Ji fullname: Ji, Yuefeng organization: The State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China – sequence: 4 givenname: Yu surname: Zhang fullname: Zhang, Yu organization: Academy of Broadcasting Science, NRTA, Beijing, 102206, China |
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| Keywords | Chaotic secure communication High speed and long distance Optical chaos High complexity and ultra-wideband Differential feedback system |
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| SubjectTerms | Chaotic secure communication Differential feedback system High complexity and ultra-wideband High speed and long distance Optical chaos |
| Title | Ultra-wideband chaotic optical communication based on electro-optic differential feedback loop |
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