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Exam RCDD-001 All Questions

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Exam RCDD-001 topic 1 question 14 discussion

Actual exam question from BICSI's RCDD-001
Question #: 14
Topic #: 1
[All RCDD-001 Questions]

Assume that the optical power transmitted by a 62.5/125 multimode fiber is distributed uniformly across its core. If this fiber is perfectly coupled (i.e., the two fibers are aligned and abutted) to a 50/125 fiber, what is the percent of power that is lost?

  • A. 0 percent
  • B. 36 percent
  • C. 50 percent
  • D. 80 percent
  • E. 100 percent
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Suggested Answer: B 🗳️
by waldo31 at May 25, 2022, 3:55 a.m.

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Tibit111
1 year, 4 months ago
It is a typo, it should be 26.915% Multimode mismatch in which a 50/125 recieves a signal from a 62.5/125 has a core and power loss of 5.7dB.
upvoted 1 times
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Islam_Ramadan
1 year, 9 months ago
We need an explanation .
upvoted 1 times
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Islam_Ramadan
1 year, 9 months ago
It should be 0 percent . why they chose number B ?
upvoted 1 times
Tibit111
1 year, 4 months ago
It is not 0 because the recieving fiber is 50 from a 62.5 and not the other way around.
upvoted 1 times
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