Security enhancement in coherent OFDM optical transmission with chaotic three-dimensional constellation scrambling

Zhang, Y., Jiang, N., Zhao, A., Liu, S., Peng, J., Chen, L., Lavery, M. P.J. , Abbas, H. T. and Qiu, K. (2022) Security enhancement in coherent OFDM optical transmission with chaotic three-dimensional constellation scrambling. Journal of Lightwave Technology, 40(12), pp. 3749-3760. (doi: 10.1109/JLT.2022.3154091)

Abstract

In this paper, we propose and experimentally demonstrate a novel hybrid chaos-based three-dimensional (3-D) constellation scrambling scheme to simultaneously improve the physical layer security and transmission performance of the coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. A 3-D regular hexahedron signal constellation is constructed by the constellation figure of merit principle, which not only expands the encryption dimension but improves the error performance. The dynamic parameters for constellation scrambling are generated by the 5-D hybrid chaotic scheme based on the combination of a 3-D hyperchaotic Hénon mapping and two independent 1-D Logistic mappings, as such a key space of ∼10133 is introduced to enhance the security level of OFDM data encryption during transmission. Furthermore, a transmission experiment for encryption of 144 Gbps 16-quadrature-amplitude-modulation OFDM data over a 100 km standard single-mode fiber in a CO-OFDM system is demonstrated. Compared with the case of using the 3-D rectangular constellation, a 2 dB bit error rate performance improvement is achieved. The results show that the proposed scheme could effectively enhance the system security and transmission performance, which suggests a scalable strategy for future physically secured CO-OFDM systems.

• Item Type: Articles
• Additional Information: This work was supported in part by the Sichuan Province Science and Technology Support Program under Grant 2021JDJQ0023, in part by the National Natural Science Foundation of China under Grants 62171087 and 61671119, in part by the STCSM under Grant SKLSFO2020-05, in part by the Fundamental Research Funds for Central Universities under Grant ZYGX2019J003, and in part by the Exchange Project for Key Lab of Optical Fiber Sensing and Communications (Ministry of Education of China) under Grant ZYGX2021K010.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Abbas, Dr Hasan and Lavery, Professor Martin and Zhang, Yiqun
• Authors: Zhang, Y., Jiang, N., Zhao, A., Liu, S., Peng, J., Chen, L., Lavery, M. P.J., Abbas, H. T., and Qiu, K.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Journal of Lightwave Technology
• Publisher: IEEE
• ISSN: 0733-8724
• ISSN (Online): 1558-2213
• Published Online: 24 February 2022
• Copyright Holders: Copyright © 2022 IEEE
• First Published: First published in Journal of Lightwave Technology 40(12): 3749-3760
• Publisher Policy: Reproduced in accordance with the publisher copyright policy