In what year was the first North American commercial fiber optic system installed?

In what year was the first North American commercial fiber optic system installed?

• A. 1967
• B. 1977
• C. 1987
• D. 1997

Answer: (B)

The important idea here is recognizing when fiber optic technology moved from research into real-world telecom service. By the mid-to-late 1970s, the technology had achieved practical low-loss glass, reliable light sources, and workable detectors, which made long-distance, repeatable optical links feasible for commercial use. Because of that, carriers in North America began deploying true commercial fiber optic systems in that era. The first North American commercial fiber optic system was installed in 1977, signaling the transition from experimental demonstrations to usable telecom infrastructure. Earlier dates would not reflect a commercial deployment, and later dates would come after this initial milestone.

The important idea here is recognizing when fiber optic technology moved from research into real-world telecom service. By the mid-to-late 1970s, the technology had achieved practical low-loss glass, reliable light sources, and workable detectors, which made long-distance, repeatable optical links feasible for commercial use. Because of that, carriers in North America began deploying true commercial fiber optic systems in that era. The first North American commercial fiber optic system was installed in 1977, signaling the transition from experimental demonstrations to usable telecom infrastructure. Earlier dates would not reflect a commercial deployment, and later dates would come after this initial milestone.