Huawei Exam H31-311 Topic 4 Question 84 Discussion

Actual exam question for Huawei's H31-311 exam

Question #: 84
Topic #: 4

[All H31-311 Questions]

Which of the following can be the center wavelengths of the pump sources in an EDFA? (Multiple Choice)

A980 nm

B1510 nm

C1480 nm

D1310 nm

Show Suggested Answer

Suggested Answer: A, C

by Helga at Apr 13, 2024, 02:29 PM

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Malinda

5 days ago

Ah, I see what you mean. But what about 1310 nm? Wouldn't that be a bit too short to effectively pump erbium?

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Jerry

7 days ago

You know, I think you're right. 1510 nm seems a bit high. I'd say the best options are 980 nm and 1480 nm.

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Sherly

8 days ago

Hmm, I'm not so sure about 1510 nm. Isn't that a bit too long for efficient pumping of erbium?

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Emiko

9 days ago

Yeah, that's a good point. I remember from my studies that erbium has absorption peaks around 980 nm and 1480 nm, so those would be the logical choices.

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Kerry

11 days ago

Okay, let's think this through. I'm pretty sure the pump sources need to be in the wavelength range where erbium ions can be excited, right?

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Sharen

12 days ago

Hmm, this is a tricky one. I'm not too sure about the center wavelengths of EDFA pump sources. But I'm going to give it my best shot.

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