How to protect fiber optic cables from lightning strikes
Implementing lightning protection strategies such as surge protection devices, grounding systems, lightning rods, and proper cable design can help safeguard fiber optic cables and the networks they support. 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. To help protect my network, I've set up a fiber isolation barrier using a couple of fiber media converters.
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