Optical Fiber Sensors MCQs with Answers

adminApril 10, 2024

0 7 1 minute read

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

Optical Fiber Sensors Online Quiz

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Test Name: Optical Fiber Sensors MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Optical Fiber Sensors

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1 / 40

Which type of optical fiber sensor measures changes in temperature?

Mach-Zehnder Interferometer

Fiber Bragg Grating (FBG)

Fabry-Perot Interferometer

2 / 40

What is the function of the transducer in an optical fiber sensor?

Convert physical quantity into optical signal

Convert electrical signal into physical quantity

Convert optical signal into electrical signal

3 / 40

What is the term for the change in the resonant wavelength of a Fiber Bragg Grating (FBG) due to strain or temperature?

Bragg wavelength shift

Mach-Zehnder shift

Fabry-Perot shift

4 / 40

Which type of optical fiber sensor measures changes in the intensity of light due to external influences?

Interferometric sensor

Intensity-based sensor

Polarization-based sensor

5 / 40

Which property of light is commonly utilized in optical fiber sensors?

Wavelength

Polarization

Intensity

6 / 40

Which type of optical fiber sensor measures changes in the spectral characteristics of backscattered light?

Raman scattering-based sensor

FBG sensor

Rayleigh scattering-based sensor

7 / 40

What is the function of an optical coupler in an optical fiber sensor system?

Generate the optical signal

Convert optical signals to electrical signals

Combine or split optical signals

8 / 40

Which type of optical fiber sensor is based on the interference of light waves?

Interferometric sensor

Polarization-based sensor

Intensity-based sensor

9 / 40

What is the function of a photo-detector in an optical fiber sensor system?

Generate the optical signal

Convert optical signal into electrical signal

Convert electrical signal into physical quantity

10 / 40

What is the primary advantage of optical fiber sensors over traditional sensors?

Lower cost

Immunity to electromagnetic interference

Higher accuracy

11 / 40

Which type of optical fiber sensor measures changes in strain?

Fabry-Perot Interferometer

Fiber Bragg Grating (FBG)

Mach-Zehnder Interferometer

12 / 40

Which type of optical fiber sensor is suitable for distributed sensing along the length of the fiber?

Optical Time Domain Reflectometry (OTDR)

Mach-Zehnder Interferometer

FBG sensor

13 / 40

Which type of optical fiber sensor is commonly used for distributed strain sensing in civil engineering structures?

Polarization-based sensor

Interferometric sensor

FBG sensor

14 / 40

What is the function of the modulator in an optical fiber sensor system?

Encode the physical quantity onto the optical signal

Decode the optical signal

Amplify the optical signal

15 / 40

What is the term for the change in the refractive index of an optical fiber due to external influences?

Bending loss

Sensitivity change

Refraction change

16 / 40

Which type of optical fiber sensor is based on changes in the interference pattern caused by external influences?

Interferometric sensor

Intensity-based sensor

Polarization-based sensor

17 / 40

What is the term for the phenomenon where light travels through the core of an optical fiber and interacts with its surroundings?

Total internal reflection

Evanescent field

Dispersion

18 / 40

What is the function of a light source in an optical fiber sensor system?

Amplify the optical signal

Generate the optical signal

Convert optical signal into electrical signal

19 / 40

What is the function of a demodulator in an optical fiber sensor system?

Amplify the optical signal

Retrieve the measured physical quantity from the optical signal

Generate the optical signal

20 / 40

What is the primary sensing element in an optical fiber sensor?

Light source

Photodetector

Optical fiber

21 / 40

What is the term for the process of converting the measured physical quantity into an optical signal in an optical fiber sensor?

Modulation

Demodulation

Transduction

22 / 40

Which type of optical fiber sensor measures changes in refractive index near the fiber core?

Evanescent wave sensor

Polarization-based sensor

Intensity-based sensor

23 / 40

Which type of optical fiber sensor is based on changes in the polarization state of light?

Intensity-based sensor

Polarization-based sensor

Interferometric sensor

24 / 40

Which type of optical fiber sensor uses the interference of light waves to measure temperature?

Polarization-based sensor

Intensity-based sensor

Interferometric sensor

25 / 40

What is the primary advantage of optical fiber sensors in hazardous environments?

Intrinsic safety

Compatibility with harsh chemicals

Low sensitivity to temperature changes

26 / 40

Which type of optical fiber sensor is commonly used in biomedical applications such as glucose monitoring?

Intensity-based sensor

Interferometric sensor

Polarization-based sensor

27 / 40

Which type of optical fiber sensor uses the change in light intensity to detect a physical quantity?

Intensity-based sensor

Wavelength-based sensor

Polarization-based sensor

28 / 40

Which type of optical fiber sensor measures changes in the polarization state of light?

Interferometric sensor

Polarization-based sensor

Intensity-based sensor

29 / 40

Which physical quantity can be measured using a Fiber Bragg Grating (FBG) sensor?

Magnetic field

Humidity

Strain

30 / 40

Which type of optical fiber sensor measures changes in pressure?

Fabry-Perot Interferometer

Polarization-based sensor

Mach-Zehnder Interferometer

31 / 40

What type of phenomena can optical fiber sensors detect?

Sound, vibration, acceleration

Magnetic field, humidity, chemical concentration

Temperature, pressure, strain

32 / 40

What is the term for the region outside the core of an optical fiber where the electric field decreases exponentially?

Cladding

Core

Evanescent field

33 / 40

What is the primary advantage of Fiber Bragg Grating (FBG) sensors?

High sensitivity

Low cost

Multiplexing capability

34 / 40

What is the term for the process of retrieving the measured physical quantity from the optical signal in an optical fiber sensor?

Modulation

Demodulation

Transduction

35 / 40

What is the primary advantage of Fabry-Perot Interferometer sensors?

Immunity to environmental changes

Large dynamic range

High resolution

36 / 40

Which type of optical fiber sensor is commonly used in structural health monitoring?

Interferometric sensor

Polarization-based sensor

FBG sensor

37 / 40

Which type of optical fiber sensor is suitable for distributed temperature sensing along the length of the fiber?

Raman scattering-based sensor

FBG sensor

Rayleigh scattering-based sensor

38 / 40

What is the primary sensing mechanism in a Mach-Zehnder Interferometer?

Wavelength shift

Phase shift

Intensity modulation

39 / 40

What is the primary sensing mechanism in a Fiber Bragg Grating (FBG) sensor?

Intensity modulation

Phase shift

Wavelength shift

40 / 40

Which type of optical fiber sensor is commonly used for distributed temperature sensing in harsh environments?

Raman scattering-based sensor

FBG sensor

Rayleigh scattering-based sensor

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adminApril 10, 2024

0 7 1 minute read