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Fiber optic communication I don t know which one it is
Fiber-optic communication is a form of optical communication for transmitting information from one place to another by sending pulses of infrared or visible light through an optical fiber. The light is a form of carrier wave that is modulated to carry information. Fiber is preferred. An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. These two categories define how light travels through the fiber core: Transmits a single light mode; very low attenuation; supports long-distance transmission up to 100 km or more. They have a central core surrounded by a concentric cladding with slightly lower (by ≈ 1%) refractive index. Optical fibers are typically made of silica with index-modifying dopants such as GeO 2.
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