A glass or plastic fiber that diffuses light beside its pathway is fiber optics. Light is stored in the core of the optical fiber by whole interior manifestation. This causes the fiber to act as a waveguide. Fiber Optics is used as light guides to perform the watercourse of light basis to a point of use. These guides lighten parts that are too minute or too destructive to fix a light bulb. The plastic light guide and the glass light guide are the two kinds of light guides.