Multi-branch identification using Φ-OTDR for PON physical layer monitoring

Zhi Wang; Fei Liu; Guo Zhu; Peng Xu; Quanlin Chen; Qingling Zhou; Xian Zhou

doi:10.1117/12.3048626

5 December 2024 Multi-branch identification using Φ-OTDR for PON physical layer monitoring

Zhi Wang, Fei Liu, Guo Zhu, Peng Xu, Quanlin Chen, Qingling Zhou, Xian Zhou

Author Affiliations +

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 1341832 (2024) https://doi.org/10.1117/12.3048626
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

In this study, we proposed a cost-effective Φ-OTDR system for multi-branch monitoring in passive optical network (PON). The system accurately identified faulty branches in physical layer by analyzing specific identification frequencies (IFs) using piezoelectric transducers (PZTs). Through experiments with various optical splitters (1x2, 1x4, 1x8), we demonstrated the feasibility of the developed system. From the results, the proposed method reliably detected IFs even under significant power attenuation (21 dB) and successfully identified the frequency intervals down to 15 Hz with a maximum range of 2.5 kHz, supporting the simultaneous monitoring of up to 64 branches in PON. The results highlight the system’s potential for large-scale deployment in complex PON architectures.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhi Wang, Fei Liu, Guo Zhu, Peng Xu, Quanlin Chen, Qingling Zhou, and Xian Zhou "Multi-branch identification using Φ-OTDR for PON physical layer monitoring", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 1341832 (5 December 2024); https://doi.org/10.1117/12.3048626

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