What type of reflection does fiber optic technology rely upon?

Question

Total Internal Reflection

Retrereflection

Regular

Diffuse

Answer 1

Another important point is the fact that the loss of light amplitude is insignificant. It is like a perfect mirror, hence fiber optic cables can transmit light over great distances with very little signal loss. Also many fibers today are graded index which means the index changes as you move out from the center. This allows greater distance and also greater bandwidth compared to step index.

Answer 2

The critical angle for glass is around 43 degrees. it means that if the angle of incidence is greater than 43 degrees inside the glass, than we will have only reflected ray, but not refracted. So, in this case we have total internal reflection. The right answer is 1.