Multimode fiber optic cables allow multiple light paths (modes) to carry data simultaneously. Although they can do the same job in some instances, the different construction methods make each of them better suited to certain tasks and budgets. Single mode fibers are. Whether you are expanding a data center, upgrading an enterprise LAN, or building long-distance backbone connections, choosing between single mode fiber (SMF) and multimode fiber (MMF) is one of the most important design decisions. Dual fiber modules use two fibers. They are easier to set up and give steady communication.
[PDF Version]