Fiber Optic Communication MCQs with Answers

adminApril 10, 2024

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Welcome to the Fiber Optic Communication MCQs with Answers. In this post, we have shared Fiber Optic Communication Online Test for different competitive exams. Find practice Fiber Optic Communication Practice Questions with answers in Physics Tests exams here. Each question offers a chance to enhance your knowledge regarding Fiber Optic Communication.

Fiber Optic Communication Online Quiz

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Test Name: Fiber Optic Communication MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Fiber Optic Communication

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1 / 40

Which optical component is used to combine multiple optical signals into a single fiber?

Optical isolator

Wavelength division multiplexer

Optical amplifier

2 / 40

What is the term for the bending of light rays as they pass through a medium?

Reflection

Diffraction

Refraction

3 / 40

What is the function of dispersion compensating fibers in fiber optic communication?

Increase signal strength

Filter out noise

Reduce dispersion effects

4 / 40

What is the term for the phenomenon where light pulses spread out over distance due to different travel paths?

Polarization dispersion

Modal dispersion

Chromatic dispersion

5 / 40

What is the name of the process where light signals are converted into electrical signals?

Photonic conversion

Electroluminescence

Photodetection

6 / 40

What is the typical range of attenuation for optical fibers?

2-5 dB/km

0.2-0.5 dB/km

10-20 dB/km

7 / 40

What is the primary advantage of fiber optic communication over copper wire?

Lower cost

Easier installation

Higher bandwidth

8 / 40

What is the core material of most optical fibers?

Metal

Plastic

Glass

9 / 40

What is the function of a fiber optic transmitter?

Convert light signals to electrical signals

Convert electrical signals to light signals

Boost light signals

10 / 40

Which parameter determines the number of modes in a multi-mode optical fiber?

Refractive index

Core diameter

Cladding thickness

11 / 40

Which type of fiber optic cable is more resistant to bending and stretching?

Glass optical fiber

Polymer optical fiber

Plastic optical fiber

12 / 40

What type of modulation is commonly used in fiber optic communication?

Frequency modulation

Phase modulation

Amplitude modulation

13 / 40

What is the name of the phenomenon where light leaks out of the fiber core due to imperfections?

Attenuation

Leakage

Scattering

14 / 40

Which component is used to couple light into a fiber optic cable?

Photodetector

Laser diode

Optical amplifier

15 / 40

Who is credited with the invention of the optical fiber?

John Tyndall

Narinder Singh Kapany

Charles K. Kao

16 / 40

Which property of optical fibers allows them to transmit data over long distances?

Low attenuation

Low cost

High bandwidth

17 / 40

What is the function of a fiber optic receiver?

Convert light signals to electrical signals

Generate light signals

Amplify light signals

18 / 40

Which type of dispersion is caused by variations in the refractive index of the core?

Chromatic dispersion

Material dispersion

Modal dispersion

19 / 40

Which type of optical fiber has a single core surrounded by cladding?

Graded-index

Multi-mode

Single-mode

20 / 40

What is the main disadvantage of multi-mode fibers compared to single-mode fibers?

Modal dispersion

Lower bandwidth

Higher attenuation

21 / 40

What is the typical diameter of the core in single-mode fibers?

100-200 micrometers

8-10 micrometers

50-100 micrometers

22 / 40

Which parameter determines the bandwidth of an optical fiber?

Core diameter

Refractive index

Cladding thickness

23 / 40

What is the term for the spreading of light pulses as they travel through an optical fiber?

Attenuation

Reflection

Dispersion

24 / 40

What is the term for the process of encoding data onto light signals in fiber optic communication?

Modulation

Demodulation

Multiplexing

25 / 40

What is the term for the loss of signal strength in optical fibers?

Attenuation

Refraction

Dispersion

26 / 40

What is the primary advantage of single-mode fibers over multi-mode fibers?

Higher bandwidth

Larger core diameter

Lower modal dispersion

27 / 40

Which type of optical fiber has a larger core diameter?

Multi-mode

Single-mode

Graded-index

28 / 40

What is the function of the cladding in an optical fiber?

Increase flexibility

Protect the core

Reflect light back into the core

29 / 40

What is the purpose of using graded-index fibers?

Enhance signal strength

Increase bandwidth

Reduce modal dispersion

30 / 40

Which type of dispersion can be minimized through the use of dispersion-shifted fibers?

Modal dispersion

Chromatic dispersion

Material dispersion

31 / 40

What is the function of an optical isolator in fiber optic communication?

Prevents signal reflections

Boosts signal strength

Filters out noise

32 / 40

Which type of dispersion is caused by different propagation speeds of different modes?

Material dispersion

Modal dispersion

Chromatic dispersion

33 / 40

What is the purpose of using wavelength division multiplexing in fiber optic communication?

Enhance signal quality

Reduce attenuation

Increase bandwidth

34 / 40

What is the typical operating wavelength range for fiber optic communication?

300-500 nm

1000-2000 nm

800-1600 nm

35 / 40

Which type of dispersion causes different wavelengths to travel at different speeds?

Chromatic dispersion

Modal dispersion

Material dispersion

36 / 40

Which type of fiber optic cable is typically used for short-distance communication within buildings?

Single-mode fiber

Multi-mode fiber

Plastic optical fiber

37 / 40

What is the refractive index of the cladding compared to the core in a step-index fiber?

Lower

Same

Higher

38 / 40

What is the function of the optical amplifier in fiber optic communication?

Boost signal strength

Convert light to electricity

Filter out noise

39 / 40

What is the primary cause of signal loss in optical fibers?

Absorption

Reflection

Scattering

40 / 40

What is the principle behind Fiber Optic Communication?

Diffraction

Interference

Total internal reflection

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adminApril 10, 2024

0 5 1 minute read