Light in a vacuum travels at 299,792,458 meters per second, which equates to a latency of 3.33 microseconds per kilometer (km) of path length. Light travels slower in fiber due to the fiber’s refractive index, which increases the latency to approximately 5 microseconds per km.
Read moreWhat is better 5G or fiber optic?
While Fiber optic cable is substantially faster than 5G for the time being , the technology of 5G is only in its infancy and will improve as it gets implemented. 5G has a potential speed of 20 Gbps, while fiber optics boasts upwards of 100 Gbps or more.
Read more