Question
Physics Question on communication systems
The attenuation in optical fibre is mainly due to
A
absorption
B
scattering
C
neither absorption nor scattering
D
Both (a) and (b)
Answer
Both (a) and (b)
Explanation
Solution
A very small part of light energy is lost from an optical fibre due to absorption or due to light leaving the fibre area resulting scattering of light sideways by impurities in the glass fibre.