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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)

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Suggested Answer: A, C

Contribute your Thoughts:

Ethan
7 months ago
I would go with 1510 nm as it is also a possible center wavelength for pump sources.
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Hyman
7 months ago
I agree with User1, 980 nm seems like a common wavelength for pump sources in an EDFA.
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France
7 months ago
I believe it can also be 1480 nm as the center wavelength.
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Kyoko
8 months ago
I think the center wavelengths of the pump sources in an EDFA can be 980 nm.
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Glen
8 months ago
I am leaning towards 1310 nm as the center wavelength for the pump sources in an EDFA.
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Dolores
8 months ago
I think both 980 nm and 1480 nm can be center wavelengths for the pump sources in an EDFA.
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Aliza
8 months ago
I disagree, I believe it can also be 1480 nm.
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Nana
9 months ago
I think the center wavelengths of the pump sources in an EDFA can be 980 nm.
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Ocie
8 months ago
D) 1310 nm
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Ocie
8 months ago
C) 1480 nm
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Ocie
8 months ago
B) 1510 nm
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Ocie
8 months ago
A) 980 nm
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Malinda
9 months 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
9 months 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
9 months 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
10 months 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
10 months 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
10 months 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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