Propagation of light along optical channels

Question

Explain the various modes for the propagation of light along the optical channels.

Answer 1

There exist two modes for propagating light all along the optical channels:

a) Multimode and

b) Single mode.

Multimode : In this mode, the numerous beams from the light source travel through the core in several paths.

Single mode : In this mode, the fiber along with the extremely small diameter which limits the beams to the few angles, which causes almost horizontal beam.