Basically, fiber manufacturers use two methods to fabricate multimode and single mode glass fibers. One method is vapor phase oxidation, and the other method is direct-melt process. Unlike traditional copper cables, fiber optic cables use light signals to transmit data, which allows them to carry large amounts of information at extremely high speeds. Optical fibres in a cable are normally protected in one of two ways, either being tight buffered or contained in loose tubes. When tight buffered the individual optical fibre is covered directly with a layer of thermoplastic material or one or more fibres can be contained within a loose tube which. Optical fiber cable carries information encoded in light pulses over long distances with lower signal loss compared to electrical cables. See the FOA Virtual Hands-On for the process of fiber optic.
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