Fiber Optic
Although it’s been around for a very long time, it use to be used for the most high-end servers. Today we are seeing it more and more in office environments.

The actual fiber optic is very thin, it has cladding around it and that’s what the light reflects off on the inside when its running down the wire, around that is Kevlar surrounded by a protective coating. There are really only two types of fiber optic cabling that you will run into, single mode and multimode.

SINGLE MODE– This uses laser light to actually transfer the data and is designed to go for incredibly long distances, it can go tens of kilometers depending on how the system is designed. It’s rare, expensive and very weird.

MULTIMODE – This uses a light emitting diode (LED) to send the data and nine times out of ten when you find a fiber optic system it will be multimode.