Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical Feedback
A simple schemefor generating chaotic signals with concealed time-delay signature (TDS) is proposed and experimentally demonstrated. The architecture of the system is based on a semiconductor laser (SL) under multi-path optical feedback (MPOF) provided by a 2 × 2 fiber coupler (FC) and a...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9645382/ |
| _version_ | 1818572247747526656 |
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| author | Bing Cui Guangqiong Xia Xi Tang Fei Wang Zaifu Jiang Yanfei Zheng Fengling Zhang Zhengmao Wu |
| author_facet | Bing Cui Guangqiong Xia Xi Tang Fei Wang Zaifu Jiang Yanfei Zheng Fengling Zhang Zhengmao Wu |
| author_sort | Bing Cui |
| collection | DOAJ |
| description | A simple schemefor generating chaotic signals with concealed time-delay signature (TDS) is proposed and experimentally demonstrated. The architecture of the system is based on a semiconductor laser (SL) under multi-path optical feedback (MPOF) provided by a 2 × 2 fiber coupler (FC) and a fiber mirror (FM). The results show that SLs with MPOF are more beneficial for achieving TDS suppressed chaotic output than those with single optical feedback (SOF) systems. In addition, the TDS of the chaotic signal generated by the SL under MPOF is insensitive to the length deviation of the feedback cavities, and therefore such a scheme is convenient for practical application. Furthermore, the influence of FC coupling ratio in the MPOF module, feedback strength, and bias current of the SL on the TDS is comprehensively studied. By selecting suitable parameters, the TDS of the chaotic signal generated by the SL under MPOF can be completely concealed. Finally, permutation entropy (PE) is adopted to evaluate the complexity of the generated chaotic signal, and the result demonstrates that the suppression of TDS does not lead to the degradation of complexity for the proposed scheme. |
| first_indexed | 2024-12-14T18:54:33Z |
| format | Article |
| id | doaj.art-4ef3e154ee804f4193df5081565e2b84 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-14T18:54:33Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-4ef3e154ee804f4193df5081565e2b842022-12-21T22:51:09ZengIEEEIEEE Photonics Journal1943-06552022-01-011411510.1109/JPHOT.2021.31336599645382Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical FeedbackBing Cui0Guangqiong Xia1https://orcid.org/0000-0002-3920-6749Xi Tang2Fei Wang3https://orcid.org/0000-0001-6019-6576Zaifu Jiang4Yanfei Zheng5Fengling Zhang6Zhengmao Wu7https://orcid.org/0000-0002-4331-8743School of Physical Science and Technology, Southwest University, Chongqing, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing, ChinaSchool of Mathematics and Physics, Jingchu University of Technology, Hubei, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing, ChinaA simple schemefor generating chaotic signals with concealed time-delay signature (TDS) is proposed and experimentally demonstrated. The architecture of the system is based on a semiconductor laser (SL) under multi-path optical feedback (MPOF) provided by a 2 × 2 fiber coupler (FC) and a fiber mirror (FM). The results show that SLs with MPOF are more beneficial for achieving TDS suppressed chaotic output than those with single optical feedback (SOF) systems. In addition, the TDS of the chaotic signal generated by the SL under MPOF is insensitive to the length deviation of the feedback cavities, and therefore such a scheme is convenient for practical application. Furthermore, the influence of FC coupling ratio in the MPOF module, feedback strength, and bias current of the SL on the TDS is comprehensively studied. By selecting suitable parameters, the TDS of the chaotic signal generated by the SL under MPOF can be completely concealed. Finally, permutation entropy (PE) is adopted to evaluate the complexity of the generated chaotic signal, and the result demonstrates that the suppression of TDS does not lead to the degradation of complexity for the proposed scheme.https://ieeexplore.ieee.org/document/9645382/Chaosmulti-path optical feedback (MPOF)semiconductor laser (SL)time-delay signature (TDS) |
| spellingShingle | Bing Cui Guangqiong Xia Xi Tang Fei Wang Zaifu Jiang Yanfei Zheng Fengling Zhang Zhengmao Wu Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical Feedback IEEE Photonics Journal Chaos multi-path optical feedback (MPOF) semiconductor laser (SL) time-delay signature (TDS) |
| title | Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical Feedback |
| title_full | Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical Feedback |
| title_fullStr | Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical Feedback |
| title_full_unstemmed | Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical Feedback |
| title_short | Generation of Chaotic Signals With Concealed Time-Delay Signature Based on a Semiconductor Laser Under Multi-Path Optical Feedback |
| title_sort | generation of chaotic signals with concealed time delay signature based on a semiconductor laser under multi path optical feedback |
| topic | Chaos multi-path optical feedback (MPOF) semiconductor laser (SL) time-delay signature (TDS) |
| url | https://ieeexplore.ieee.org/document/9645382/ |
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