(a) Define optical fibres. Explain how optical fibres are classified.…
Previous year question for Advanced Engineering Physics.
Question
(a) Define optical fibres. Explain how optical fibres are classified. Discuss their characteristic features and advantage of optical communication over the conventional ones.
(b) An optical fibre has a numerical aperture of $0.15$ in air and a cladding refractive index of $1.50$. Find the numerical aperture of the fibre in liquid of refractive index $1.30$.
- Year: 2022
- Subject: Advanced Engineering Physics