Fiber optic cables are much thinner and lighter than metal wires. Data can be transmitted rather than analogically. The main disadvantage of fiber optics is that the SFP+ Cables are expensive to install. In addition, they are more fragile than wire and are difficult to splice. Fiber optics is a particularly popular technology In addition, telephone companies are steadily replacing traditional telephone lines with fiber optic cables. In the future, almost all communications will employ fiber optics