A basic fiber optic system consists of a transmitting device, which generates the light signal; an optical fiber cable, which carries the light; and a receiver, which accepts the light signal transmitted. The fiber itself is passive and does not contain any active, generative properties.
Optical fiber for
telecommunications is made up of three parts including the core, cladding &
coating. The core is the central part of the fiber which transmits the light.
The cladding surrounds the core and keeps the light in the core because it is
made of material with a lower index of refraction. The core and cladding are
inseparable because they are made up of a single piece of glass silica, treated
to create the differences needed in refraction. Finally, a coating generally
made of UV protective acrylate is put on a fiber during the draw process to
protect it.
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