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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Ethan

6 months ago

I would go with 1510 nm as it is also a possible center wavelength for pump sources.

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Hyman

6 months ago

I agree with User1, 980 nm seems like a common wavelength for pump sources in an EDFA.

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France

6 months ago

I believe it can also be 1480 nm as the center wavelength.

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Kyoko

6 months ago

I think the center wavelengths of the pump sources in an EDFA can be 980 nm.

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Glen

7 months ago

I am leaning towards 1310 nm as the center wavelength for the pump sources in an EDFA.

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Dolores

7 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

7 months ago

I disagree, I believe it can also be 1480 nm.

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Nana

7 months ago

I think the center wavelengths of the pump sources in an EDFA can be 980 nm.

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Ocie

7 months ago

D) 1310 nm

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Ocie

7 months ago

C) 1480 nm

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Ocie

7 months ago

B) 1510 nm

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Ocie

7 months ago

A) 980 nm

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Malinda

8 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

8 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

8 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

8 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

8 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

8 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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