A digital optical fiber communication system requires a maximum bit-er – McqOptions

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1.	A digital optical fiber communication system requires a maximum bit-error-rate of 10^-9. Find the average number of photons detected in a time period for a given BER?
A.	19.7
B.	21.2
C.	20.7
D.	26.2
Answer» D. 26.2

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