Fiber optic surge protectors, also known as fiber optic lightning arresters, serve to shield fiber optic communication systems from lightning strikes and transient voltage surges. Without surge protection, this energy flows straight into the connected device., when large loads are switched on/off, or during a power outage) can cause voltage spikes, stressing the insulation and overheating circuits. While fiber optic cables themselves are non-conductive and generally unaffected by direct lightning strikes, the metal. Today's increased reliance on very sensitive electronics makes surge protection an important topic for Fiber to the Home (FTTH) applications deployed in rural, suburban and urban areas. This is achieved by using a detector to.