The initial pulse (or spike) at the beginning and at most connections in a link on the OTDR trace is caused by which of the following processes?
A. Reflected power at each air gap in the link
B. Extremely high losses at the beginning of each piece of fiber
C. Amplification of the OTDR pulse at the beginning of each piece of fiber
D. Second harmonic generation at the beginning of each piece of fiber
Show Answer
Answer: A
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