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OCN-Q11

Authored by Mekala k

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OCN-Q11
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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. What defines a single-mode fiber?

A) It supports multiple light modes.

B) It supports only one light mode.

C) It has a large core diameter.

D) It has a high numerical aperture.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

2. Which of the following is a typical core diameter for single-mode fibers?

A) 50 µm

B) 62.5 µm

C) 8-10 µm

D) 100 µm

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

3. The cutoff wavelength of a single-mode fiber is the wavelength:

A) Below which the fiber supports multiple modes

B) Above which the fiber supports multiple modes

C) Below which the fiber supports a single mode

D) Above which the fiber supports a single mode

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

4. Which of the following is true about the cutoff wavelength in single-mode fibers?

A) It is always in the visible light spectrum

B) It determines the maximum wavelength for single-mode operation

C) It determines the minimum wavelength for single-mode operation

D) It is not relevant to single-mode fibers

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

5. What happens if the operating wavelength is shorter than the cutoff wavelength in a single-mode fiber?

A) The fiber supports only one mode

B) The fiber becomes multimode

C) The fiber ceases to function

D) The fiber supports no modes

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

6.Which parameter is most critical in determining the cutoff wavelength of a fiber?

A) Core diameter

B) Numerical aperture

C) Cladding refractive index

D) Length of the fiber

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

7.What is the consequence of operating a fiber below its cutoff wavelength?

A) The fiber supports only the fundamental mode

B) The fiber exhibits chromatic dispersion

C) The fiber supports higher-order modes

D) The fiber's attenuation increases drastically

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