Fibre optics cable has many advantages over copper cable and high security is one of it's most important. Because fibre uses light instead of electrical voltages to carry the signal, it's nearly impossible for someone to tap into the data. For this reason, many financial and military institutions use only fibre optic cable.
With high speed desktop applications such as FDDI, multimedia and ATM appearing more frequently in the workplace, the demand for fibre optic cable has risen.
Jus a brief of the advantages for using fibre optic cable as a data transmission medium:
Water proof, no voltage surge
Light speed transmission
Larger bandwidth transmission, multiple video and data channels over a cable