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Title: Technique for monitoring and recovering of the polarisation state in OPGW with influencing factors analysis

Authors: Ye Zhang; Huixia Ding; Yongjing Wei; Youxiang Zhu; Wei Liu; Yi Lu

Addresses: China Electric Power Research Institute, Beijing, China ' China Electric Power Research Institute, Beijing, China ' State Grid Shandong Electric Power Company Information and Communication Company, Jinan, Shandong, China ' State Grid Shandong Electric Power Company Information and Communication Company, Jinan, Shandong, China ' State Grid Shandong Electric Power Company Information and Communication Company, Jinan, Shandong, China ' State Grid Shandong Electric Power Company Information and Communication Company, Jinan, Shandong, China

Abstract: OPGW is widely employed in China's electric-power optical communication system. It has been frequently reported that the optical transport network carried by OPGW encountered system failures due to the extreme environment, such as strong wind and lightning. To investigate this issue, this article derives a theoretical model that describes the rotation of state of polarisation (RSOP) of the optical signal inside OPGW and builds a simulation system together with conventional model of RSOP. Simulation results obtained with various sets of system parameters show that the lightning would be a major source of system outage, due to the ultra fast RSOP. Finally, suggestions are given in the aspects of receiver algorithms and system design to resolve or suppress the issues caused by the mechanical force and lightning.

Keywords: optical communication system; power line; state of polarisation; SOP; lightning strike.

DOI: 10.1504/IJICT.2024.143629

International Journal of Information and Communication Technology, 2024 Vol.25 No.12, pp.66 - 80

Received: 09 May 2024
Accepted: 24 Oct 2024
Published online: 02 Jan 2025 *