Which type of optical fiber allows only one propagation mode of light?

Options

  • A. Multimode step-index fiber
  • B. Multimode graded-index fiber
  • C. Single-mode fiber
  • D. Coaxial fiber
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. Single-mode fiber

Detailed Explanation

Correct Answer: Single-mode Fiber

  • Single-mode fiber allows only one propagation mode of light.
  • It has a very small core diameter.
  • It is suitable for long-distance and high-bandwidth communication.
  • Multimode fiber supports multiple light propagation modes.