Fibre-optic communication is a method of transmitting information from one place to another by sending pulses of infrared light through an optical fibre. The light is a form of carrier wave that is modulated to carry information. Fibre is preferred over electrical cabling when high bandwidth, long distance, or immunity to electromagnetic interference is required. This type of communication can transmit voice, video, and telemetry through local area networks or across long distances.
Optical fibre is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Researchers at Bell Labs have reached a record bandwidth–distance product of over 100 petabit × kilometers per second using fibre-optic communication.
Mansfield is a market town in Nottinghamshire, England, the main town in the District of Mansfield and Mansfield Urban Area. Mansfield gained the Royal Charter of a market town in 1227. The town lies in the Maun Valley, 12 miles (19 km) north of Nottingham, and is near Sutton-in-Ashfield. Most of the 106,556 population live within the town proper (including Mansfield Woodhouse), with Market Warsop as a secondary centre. It is the only local authority in Nottinghamshire directly to elect its mayor.