Fiber optics

glass fibers that are used to transmit data using pulses of light (enables transmission over a wide bandwidth without interference)

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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Fiber optics n. An optical system in which light or an image is conveyed by a compact bundle of fine flexible glass or plastic fibers. [more]Fiber optics - Community and Resources

Noun
1. the transmission of light signals via glass fibers
(synonym) fiberoptics, fibre optics, fibreoptics
(hypernym) transmission

The branch of optical technology concerned with the transmission of light through fibers made of transparent materials such as glasses and plastics. (188 ) [2196] Note 1: Telecommunications applications of fiber optics use flexible low-loss fibers, using a single fiber per optical path. Present-day plastic fibers have losses that are too high for telecommunications applications. Note 2: Various industrial and medical applications of fiber optics, such as endoscopes, use flexible fiber bundles in which individual fibers are spatially aligned, permitting optical relay of an image. Note 3: Some specialized industrial applications use rigid (fused) aligned fiber bundles for image transfer; such as in the fiber optics faceplates used on some cathode ray rubes (CRTs) to "flatten" the image.