Transmission speeds/distances limits are 100 Mbit/s up to 2 km, 1 Gbit/s for distances up to 500-600meters, and 10Gbit/s for distances up to 300 meters.
These are widely deployed in premises application & easily support applications ranging from Ethernet (10 Mbit/s) to Gigabit Ethernet (1 Gbit/s) and, because of their relatively large core size, are ideal for use with LED transmitters. They support more than one propagation mode, hence it is limited by modal dispersion.