Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering Branches
In this paper, a novel electro-optic feedback phase chaotic system based on nonlinear coupling of two delayed interfering branches is proposed and analyzed by numerical simulation. The feedback loop of the proposed system contains two delay branches and a Mach–Zehnder modulator. The chaot...
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8394616/ |
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| _version_ | 1849706915239559168 |
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| author | Cheng Wang Yuefeng Ji Hongxiang Wang Lin Bai |
| author_facet | Cheng Wang Yuefeng Ji Hongxiang Wang Lin Bai |
| author_sort | Cheng Wang |
| collection | DOAJ |
| description | In this paper, a novel electro-optic feedback phase chaotic system based on nonlinear coupling of two delayed interfering branches is proposed and analyzed by numerical simulation. The feedback loop of the proposed system contains two delay branches and a Mach–Zehnder modulator. The chaotic voltages generated from two branches are nonlinearly converted in order to reduce their temporal correlations. The dynamic characteristics and the complexity of the generated chaotic signal are evaluated by the bifurcation diagram and permutation entropy, respectively. Besides, the simulated results show that the time-delay signature can be concealed effectively with a lower feedback gain, meanwhile the key space is extended considerably since more tunable parameters are nonlinearly coupled, thus the security can be improved greatly. Furthermore, the communication system based on the proposed scheme is discussed, and the results demonstrate that this system can be applied in secure communication. |
| format | Article |
| id | doaj-art-af003d8482b64cc6b2e5ba6fa175f29d |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-af003d8482b64cc6b2e5ba6fa175f29d2025-08-20T03:16:04ZengIEEEIEEE Photonics Journal1943-06552018-01-0110411510.1109/JPHOT.2018.28498748394616Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering BranchesCheng Wang0https://orcid.org/0000-0002-9770-8093Yuefeng Ji1https://orcid.org/0000-0001-5133-6450Hongxiang Wang2https://orcid.org/0000-0003-4138-5376Lin Bai3State Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaIn this paper, a novel electro-optic feedback phase chaotic system based on nonlinear coupling of two delayed interfering branches is proposed and analyzed by numerical simulation. The feedback loop of the proposed system contains two delay branches and a Mach–Zehnder modulator. The chaotic voltages generated from two branches are nonlinearly converted in order to reduce their temporal correlations. The dynamic characteristics and the complexity of the generated chaotic signal are evaluated by the bifurcation diagram and permutation entropy, respectively. Besides, the simulated results show that the time-delay signature can be concealed effectively with a lower feedback gain, meanwhile the key space is extended considerably since more tunable parameters are nonlinearly coupled, thus the security can be improved greatly. Furthermore, the communication system based on the proposed scheme is discussed, and the results demonstrate that this system can be applied in secure communication.https://ieeexplore.ieee.org/document/8394616/Optical chaoselectro-optic nonlinear looptime-delay concealmentoptical secure communication. |
| spellingShingle | Cheng Wang Yuefeng Ji Hongxiang Wang Lin Bai Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering Branches IEEE Photonics Journal Optical chaos electro-optic nonlinear loop time-delay concealment optical secure communication. |
| title | Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering Branches |
| title_full | Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering Branches |
| title_fullStr | Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering Branches |
| title_full_unstemmed | Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering Branches |
| title_short | Security-Enhanced Electro-Optic Feedback Phase Chaotic System Based on Nonlinear Coupling of Two Delayed Interfering Branches |
| title_sort | security enhanced electro optic feedback phase chaotic system based on nonlinear coupling of two delayed interfering branches |
| topic | Optical chaos electro-optic nonlinear loop time-delay concealment optical secure communication. |
| url | https://ieeexplore.ieee.org/document/8394616/ |
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