An optical fibre
A flexible, transparent fibre constructed of glass (silica) or plastic with a diameter marginally thicker than a human hair is called an optical fibre, or fibre in British English. Optical fibres are widely employed in fibre-optic communications, where they allow transmission over greater distances and at higher bandwidths (data transfer rates) than electrical cables. They are primarily used to convey light[a] between the two ends of the fibre.
metal wires suffer
Fibres are employed in place of metal lines because they transmit messages more efficiently and are resistant to electromagnetic interference, which is an issue that metal cables cannot resist. Additionally, fibres are utilized for imaging and lighting. They are frequently bundled together so that they can be used to transport or, in the instance of a fiberscope, images captured from small areas.[3] A wide range of additional uses for specially engineered fibres exist, including fibre optic sensors and fibre lasers.