Fiber Optic cabling provides a far greater bandwidth than copper and is typically used for backbone connection between localized networking equipment and is increasingly becoming the preferred choice for high quality and reliable analog and digital communications.
Although its higher cost can be prohibitive for desktop applications, fiber optic cabling provides a high security link, with immunity from electromagnetic interference (EMI). It is also the solution for inter-building links and other connections beyond the maximum 90m for Category 5e copper cabling.