Consider telecommunication through optical fibers. Which of the following statements is not true ?

Options

A. optical fiberes may have homogenous core with a suitable cladding
B. optical fibres can be of graded refractive index.
C. optical fibres are subjected to electromagnetic interference from outside
D. optical fibres have exteremly low transimmion loss

Answer

C

Explanation

Optical signals travels in fibre as light. So, they are free from any type of interference.