Multi-branch monitoring technology of PON based on OTDR

Chuanbiao Zhang; Xiongyan Tang; Min Zhang; Shikui Shen

doi:10.1117/12.2642507

20 January 2023 Multi-branch monitoring technology of PON based on OTDR

Chuanbiao Zhang, Xiongyan Tang, Min Zhang, Shikui Shen

Proceedings Volume 12562, AOPC 2022: Optical Information and Networks; 1256202 (2023) https://doi.org/10.1117/12.2642507
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

In this paper, we use the experimental data to verify the technology of Optical Time Domain Reflectometry (OTDR) to realize multi-branch fault monitoring in PON access network. Then the monitoring effects of the two optical splitter structures are analyzed in detail, and the dynamic monitoring of different fault degrees is realized. We prepared single-mode optical fibers, with the length of 10.282 km, 10.768 km, 14.45 km, 25.2 km and 50.38 km respectively. Optical attenuators with different optical attenuation values, like 5 dB and 2 dB, respectively corresponding to different fault degrees of optical fiber link. The fault monitoring of branches with similar distance is analyzed, and the influencing factors such as pulse width are analyzed in detail. In experiments, it can be found that the selection of scanning pulse width has little impact on the identification of event position, but when two adjacent events fold each other due to the increase of attenuation dead zone, the identification of event position cannot be realized. It is believed that these research data can provide valuable reference for the management and maintenance of optical fiber in the actual PON network, and provide valuable data for the promotion of this new technology.

Citation Download Citation

Chuanbiao Zhang, Xiongyan Tang, Min Zhang, and Shikui Shen "Multi-branch monitoring technology of PON based on OTDR", Proc. SPIE 12562, AOPC 2022: Optical Information and Networks, 1256202 (20 January 2023); https://doi.org/10.1117/12.2642507

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KEYWORDS

Optical fibers

Signal attenuation

Optical networks

Optical attenuators

Beam splitters

Optical fiber cables

Networks

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