Waveguide, Waveguide

There are different types of waveguide for each type of wave. Waveguides differ in their geometry which can confine light in one dimension such as in slab waveguides or two dimensions as in fiber or channel waveguides.

Depending on the frequency, they can be constructed from either conductive or dielectric materials. Waveguides are used for transferring both power and communication signals.

The structure guides optical waves by total internal reflection. The most common optical waveguide is optical fiber.

Source: Wikipedia > Waveguide