OPGW is a conductive wire that is used in electrical transmission lines that offers protection phase conductors against lightning strikes. An OPGW metal joint box is also known as the "splicing box" is designed to keep the fiber core splices that lead to a patch panel in a control. However, because fiber optic cable has strengthened core, especially the direct-buried fiber optic cable has armoring layer, thus when the optical fiber cable line experience lightning, the cables might be destroyed or damaged. Lightning-induced surges can travel through power lines, telecommunication lines, or nearby metallic structures and pose a. Although the signals in fiber cables are optical signals, most of the outdoor optical cables using reinforced cores or armored optical cables are easy to get damaged under lightning because of the metal protective layer inside the cable. Therefore, it is important to build a lightning protection. Lightning poses several significant risks to fiber optic cables and the networks they support: Cable Damage: A lightning strike can directly damage fiber optic cables, causing signal loss, equipment failure, or complete network outages.
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