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Opto-Electronics and Communications Conference (OECC)

Multi-intensity Bending Eavesdropping Detection and Identification Scheme Based on the State of Polarization

Qing Lei, Yajie Li, Haokun Song, Wei Min Wang, Yongli Zhao, Jie Zhang, Yongyuan Liu

Published Jul 2, 2023• 3 citations
Publisher

Abstract

Bending eavesdropping induces fast polarization state transients. We propose a detection scheme for bending eavesdropping, enabling physical layer protection. The accuracy of identifying multi-intensity bending eavesdropping reaches 95.38% by calculating the polarization rotation angular rate.
DOI
10.1109/oecc56963.2023.10209623

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Fiber eavesdropping severely endangers the confidentiality of data transmitted in optical networks. Therefore, it is necessary to explore how to detect and locate fiber eavesdropping in an effective approach. To leverage the advantages of the state of polarization (SOP) in detecting various abnormal events while addressing its challenges in acquiring the SOP of different fiber links, we propose a multi-channel joint SOP estimation scheme to estimate the SOP of different fiber spans. Based on the proposed scheme, we provide a comprehensive solution for fiber eavesdropping location and detection in optical communication systems. In this solution, the estimated SOP and optical performance monitoring (OPM) data are utilized for rapid fiber eavesdropping detection and coarse location at the span level. The effectiveness of the solution is validated by experiments. In the aspect of detection, we achieve the detection of the start or end of fiber eavesdropping, the overlapping of fiber eavesdropping and abnormal events, and other abnormal events. The overall accuracy is 99.77%. In the aspect of location, we can locate the fiber span that has been eavesdropped.
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