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A light source, output power of 80mW, is connected to 50km of fiber, having an attenuation...

A light source, output power of 80mW, is connected to 50km of fiber, having an attenuation of 0.23dB/km at the
source wavelength. At EACH end there is a coupling loss of 0.5dB.
(c) Calculate the loss just due to the fiber, in dB and in mW.
(d) Calculate the total loss of the system, in dB and in mW.
(e) Calculate the output power through the fiber line, in mW.

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