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.
Cannock (/ˈkænək/) is a town and the administrative centre of the Cannock Chase district, as of the 2011 census, it has a population of 29,018, and is one the most populous towns in the district of Cannock Chase in the county of Staffordshire in the West Midlands region of England.
Cannock lies to the north of the West Midlands conurbation on the M6, A34 and A5 roads, and to the south of The Chase, an Area of Outstanding Natural Beauty (AONB). Cannock is served by a railway station on the Chase Line. The town comprises four district council electoral wards and the Cannock South ward includes the civil parish of Bridgtown, but the rest of Cannock is unparished.
Cannock forms part of the Cannock Built-up Area (population 86,121 in the 2011 census) which also includes Cheslyn Hay, Great Wyrley, Hednesford, Huntington, Heath Hayes and Wimblebury.