Fiber provides very reliable data transmission. Completely immune to many environmental factors that affect copper cables. The core is made of glass, which is an insulator, so that no electric current can flow. It is immune to electromagnetic interference and radio frequency interference (EMI / RFI), crosstalk , and much more. You can run cable fiber optics in addition to industrial equipment without worried. But fiber are slightly more susceptible to temperature fluctuations than copper and can be submerged in water.