Optical fiber

An optical fiber (or fibre) is a glass or plastic fiber designed to guide light along its length. Fiber optics is the overlap of applied science and engineering concerned with such optical fibers. Optical fibers are widely used in fiber-optic communication, which permits transmission over longer distances and at higher data rates than other forms of wired and wireless communications. Fibers are used instead of metal wires because signals propagate along them with less loss, and they are immune to electromagnetic interference. Optical fibers are also used to form sensors, and in a variety of other applications.
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Noun
1. a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images
(synonym) glass fiber, optical fibre, glass fibre
(hypernym) fiber, fibre
(part-holonym) fiber optic cable, fibre optic cable

A filament of transparent dielectric material, usually glass or plastic, and usually circular in cross section, that guides light . (188 ) Note 1: An optical fiber usually has a cylindrical core surrounded by, and in intimate contact with, a cladding of similar geometry. Note 2: The refractive index of the core must be slightly higher than that of the cladding for the light to be guided by the fiber. Synonym lightguide.

optical fibre

FIBRA OTTICA