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roc quiz2

Total questions: 10

Worksheet time: 6mins

Name
Class
Date
1.

In the structure of fiber, the light is guided through the core due to total internal ______

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Dispersion

2.

For a photo-diode with responsivity of 0.50 A/W & optical power of about 12μw, what would be the value of generated photocurrent?

a)

3 μa

b)

6 μa

c)

9 μa

d)

12 μa

3.

Which kind/s of misalignment assist/s in the reduction of overlap region in fiber?

a)

Angular

b)

Longitudinal

c)

Lateral

d)

All of the above

4.

Which among the following results in the removal of LED lens interface for achieving high coupling efficiency?


Answer C

a)

Spherical lens

b)

Cylindrical lens

c)

Integral lens LED

d)

All of the above

5.

9. Which component of an optical receiver is a linear frequency shaping filter used for the compensation of signal distortion and Inter Symbol Interference (ISI)?

a)

Photodetector

b)

Amplifier

c)

Equalizer

d)

None of the above

6.

While coupling of leds with fiber, on which factor/s does the size of source and lighting angle generated within the semiconductor depend/s?

a)

Geometry of die

b)

Refractive index of semiconductor

c)

Encapsulation Medium

d)

All of the above

7.

Which among the following is a key process adopted for the laser beam formation as it undergoes the light amplification?

a)

Spontaneous Emission

b)

Stimulated Emission

c)

Both a and b

d)

None of the above

8.

A fiber which is referred as non-dispersive shifted fiber is

a)

Coaxial cables

b)

Standard single mode fibers

c)

Standard multimode fibers

d)

Non zero dispersion shifted fibers

9.

In the fiber optic link, power transfer from one fiber to another and from fiber to detector must take place with _________coupling efficiency.

a)

maximum

b)

stable

c)

minimum

d)

unpredictable

10.

Which kind of dispersion phenomenon gives rise to pulse spreading in single mode fibers?

a)

Intramodal

b)

Intermodal

c)

Material

d)

Group Velocity