Optical Fibre

An optical fibre is a flexible as well as transparent fibre made by silica glass or plastic to a diameter slightly thicker than that of a human hair. Optical fibres are used mostly to transmit light between the two ends of the fibre and widely used in fibre-optic communications, unlike cable wires optical fibre permits transmission over longer distances and at higher bandwidths than wire cables. Instead of metal wires fibres are used because signals travel along them with lesser amounts of loss; in addition to this fibre are also safe to electromagnetic interference, a problem to which metal wires suffer excessively. Specially designed fibres are also used for a various other application, some of them being fibre lasers and fibre optic sensors.