Q71
When the input and output power in an optical fiber is 120μW & 3μW respectively and the length of the fiber is 8 km. What is the signal attenuation per km for the fiber?
A.
3dB/km
B.
2dB/km
AnswerC.
1dB/km
D.
4dB/km
Answer: Option B
Solution
Answer: Option B
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