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If fiber optic equipment is immune from electrical problems, how come an electrical storm can disable a transmission system?

April 26, 2017disable electrical equipment fiber optic problems storm transmission

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If fiber optic equipment is immune from electrical problems, how come an electrical storm can disable a transmission system?

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The fiber optic cable is truly immune and will not transmit electrical spikes back to the equipment as it normally contains no metallic elements and only conveys modulated light. However, Fiber optic transmitters and receivers are electrical devices and their internal circuitry and power sources may not be immune to power transients, high electromagnetic fields and loss of operating power.