If the input power 100?W is launched into 6 km of fiber, the mean optical power at the fiber output is 2?W. What is the overall signal attenuation through the fiber assuming there are no connectors or splices?

Question

Quizplus · Accepted Answer

The overall signal attenuation in dB can be calculated using the formula: Attenuation (dB) = 10 * log10(Pin/Pout), where Pin is the input power and Pout is the output power. Substituting the given values: Attenuation = 10 * log10(100/2) = 10 * log10(50) ≈ 16.98 dB.

If the Input Power 100?W Is Launched into 6 Km