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Received: Jul. 20, 2020
Accepted: Sep. 4, 2020
Posted: Nov. 24, 2020
Published Online: Dec. 7, 2020
The Author Email: Bo Liu (bo@nuist.edu.cn)
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Shuaidong Chen, Bo Liu, Yaya Mao, Jianxin Ren, Xiumin Song, Rahat Ullah, Delin Zhao, Lei Jiang, Shun Han, Jianye Zhao, Jiajia Shen, Xueyang Liu. Physical layer data encryption using two-level constellation masking in 3D-CAP-PON[J]. Chinese Optics Letters, 2021, 19(1): 010601
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Fiber Optics and Optical Communications
Chinese Optics Letters, Vol. 19, Issue 1, 010601 (2021)
Physical layer data encryption using two-level constellation masking in 3D-CAP-PON
Shuaidong Chen1, Bo Liu1,*, Yaya Mao1, Jianxin Ren2, Xiumin Song2, Rahat Ullah1, Delin Zhao1, Lei Jiang1, Shun Han1, Jianye Zhao1, Jiajia Shen1, and Xueyang Liu3
Author Affiliations
- 1Nanjing University of Information Science and Technology, Nanjing 210044, China
- 2Beijing University of Posts and Telecommunications, Beijing 100876, China
- 3University of Wollongong, NSW 2522, Australia
Abstract
A novel physical layer data encryption scheme using two-level constellation masking in three-dimensional (3D) carrier-less amplitude and phase modulation (CAP) passive optical network (PON) is proposed in this Letter. The chaotic sequence generated by Chua’s circuit model realizes two-level encryption of displacement masking and constellation rotation for 3D constellations. We successfully conduct an experiment demonstrating 8.7 Gb/s 3D-CAP-8 data transmission over 25 km standard single-mode fiber. With two-level constellation masking, a key space size of 2.1 × 1085 is achieved to bring about high security and good encryption performance, suggesting broad application prospects in future short-range secure communications.
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