Which type of optical fibre is most suitable for long-distance, high-bandwidth communication?

Options

  • A. Multimode step-index fibre
  • B. Multimode graded-index fibre
  • C. Single-mode fibre
  • D. Plastic optical fibre
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. Single-mode fibre

Detailed Explanation

Correct Answer: Single-mode fibre.

Single-mode fibre has a very small core and supports essentially one propagation mode. It offers low modal dispersion and is widely used for long-distance, high-bandwidth communication.