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

If the input power 100μW is launched into 6 km of fiber, the mean optical power at the fiber output is 2μW. What is the overall signal attenuation through the fiber assuming there are no connectors or splices? Correct Answer 16.98dB

Signal attenuation is usually expressed in decibels. It is given by Signal attenuation=10 log10Pi / Po Where, Pi & Po = Input and output power.

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