DEFINITION fiber optics (optical fiber)

Fiber optics, or optical fiber, refers to the medium and the technology associated with the transmission of information as light pulses along a glass or plastic strand or fiber. Fiber optics is used long-distance and high-performance data networking.

Fiber optic cables are used since they hold a number of advantages over copper cables, such as higher bandwidth and transmit speeds.

A fiber optic cable can contain a varying number of these glass fibers — from a few up to a couple hundred. Surrounding the glass fiber core is another glass layer called cladding. A layer known as a buffer tube protects the cladding, and a jacket layer acts as the final protective layer for the individual strand.

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