OPTICAL FIBER CABLE...

An optical fiber cable is made out of glass or plastic, in which it carries light along the inside.
The light is transmitted inside the cable by total internal reflection, which causes the fiber to act as a waveguide
Optical fibers are mainly used for communication, which allows longer distance transmissions at higher bandwidths thanany other forms of communication.
Fibers are used instead of wire as the signal travels along inside them withoutlosing alot of information. The fibers are used for illumination and they are put in bundlesso they can carry images, therefore allowing viewing in tighter spaces.