The lightning characteristics of fiber optic cable

         Most people will agree that the core of the fiber optic cable for the non-metallic materials,the optical signal is transmitted signals rather than electrical signals, is not subject tolightning strikes, but we have ignored the distinction between cable and fiber, if only part ofthe fiber is indeed do not consider the problem of mine, but the problem is actually used in the fiber optic cable, fiber is not the only part of the core, periphery and contains fiberreinforcement material used to contain a large amount of metal, including metal armor andsteel to strengthen the core, etc. the large number of facts have proved that lightning willdamage regular cable, and even burning core. So cable, especially aerial and buried fiber optic cable, had to take into account factors lightning, so be prepared.

           That in the end should be how to prevent it? High incidence of lightning to be implemented in optical engineering, the first is to choose a high dielectric strength, andlightning characteristics of a good cable, the general requirements for insulation strength of20KV, or choose multi-metal protection, fiber, so the structure for ease of lightning is verygood, to protect the fiber from damage to the core, there is a choice is to use non-metalcomponent cable, but because physical strength is not enough, easily pulled off, cut off byinsect bites, so the practice rarely used.

           In addition to the choice of materials, there is in the construction process using a special lightning protection measures, including metal sheath grounding, lightning rod set(Baolei area), the laying of shielded cable (the top of buried fiber optic cable laying singleor double row flow lines), hanging wire insulation and ground (aerial cable), disconnect the electrical wires, etc. to strengthen the core, the above methods should be based on the actual situation and make a choice.