What is the primary difference between single-mode and multi-mode optical fiber?
A. Single-mode fiber supports one mode of light, while multi-mode fiber supports multiple modes
B. Single-mode fiber has a higher core diameter than multi-mode fiber
C. Multi-mode fiber is more efficient for long-distance transmission
D. Single-mode fiber is cheaper than multi-mode fiber
Explanation:
The primary difference is that single-mode fiber supports only one mode of light, allowing for higher transmission distances and data rates, while multi-mode fiber supports multiple modes of light but over shorter distances.