For a single mode optical cable with 0.25 dB/km loss, determine the optical power 100 km from a 0.1-mW light source. ∙ A. -45 dBm ∙ B. -15 dBm ∙ C. -35 dBm

For a single mode optical cable with 0.25 dB/km loss, determine the optical power 100 km from a 0.1-mW  light source.
∙ A. -45 dBm
∙ B. -15 dBm
∙ C. -35 dBm
by

1 Answer

Answer :

∙ C. -35 dBm
by

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