Optical Fiber Sensors MCQs with Answers

adminApril 10, 2024

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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 is based on the interference of light waves?

Polarization-based sensor

Interferometric sensor

Intensity-based sensor

2 / 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

3 / 40

Which type of optical fiber sensor measures changes in strain?

Fiber Bragg Grating (FBG)

Fabry-Perot Interferometer

Mach-Zehnder Interferometer

4 / 40

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

Interferometric sensor

Polarization-based sensor

Intensity-based sensor

5 / 40

What type of phenomena can optical fiber sensors detect?

Sound, vibration, acceleration

Magnetic field, humidity, chemical concentration

Temperature, pressure, strain

6 / 40

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

Immunity to electromagnetic interference

Lower cost

Higher accuracy

7 / 40

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

Convert electrical signal into physical quantity

Convert optical signal into electrical signal

Convert physical quantity into optical signal

8 / 40

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

Interferometric sensor

Polarization-based sensor

Intensity-based sensor

9 / 40

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

Convert electrical signal into physical quantity

Generate the optical signal

Convert optical signal into electrical signal

10 / 40

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

Rayleigh scattering-based sensor

Raman scattering-based sensor

FBG sensor

11 / 40

Which type of optical fiber sensor measures changes in temperature?

Mach-Zehnder Interferometer

Fiber Bragg Grating (FBG)

Fabry-Perot Interferometer

12 / 40

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

Intensity modulation

Phase shift

Wavelength shift

13 / 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

14 / 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

15 / 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

Dispersion

Evanescent field

16 / 40

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

Polarization-based sensor

Intensity-based sensor

Interferometric sensor

17 / 40

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

Polarization-based sensor

Interferometric sensor

Intensity-based sensor

18 / 40

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

Phase shift

Intensity modulation

Wavelength shift

19 / 40

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

Convert optical signal into electrical signal

Generate the optical signal

Amplify the optical signal

20 / 40

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

Wavelength-based sensor

Polarization-based sensor

Intensity-based sensor

21 / 40

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

FBG sensor

Optical Time Domain Reflectometry (OTDR)

Mach-Zehnder Interferometer

22 / 40

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

Multiplexing capability

High sensitivity

Low cost

23 / 40

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

Convert optical signals to electrical signals

Combine or split optical signals

Generate the optical signal

24 / 40

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

FBG sensor

Raman scattering-based sensor

Rayleigh scattering-based sensor

25 / 40

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

Cladding

Evanescent field

Core

26 / 40

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

Immunity to environmental changes

High resolution

Large dynamic range

27 / 40

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

Light source

Photodetector

Optical fiber

28 / 40

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

Encode the physical quantity onto the optical signal

Amplify the optical signal

Decode the optical signal

29 / 40

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

Refraction change

Bending loss

Sensitivity change

30 / 40

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

Wavelength

Polarization

Intensity

31 / 40

Which type of optical fiber sensor measures changes in pressure?

Mach-Zehnder Interferometer

Fabry-Perot Interferometer

Polarization-based sensor

32 / 40

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

Humidity

Strain

Magnetic field

33 / 40

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

FBG sensor

Interferometric sensor

Polarization-based sensor

34 / 40

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

FBG sensor

Interferometric sensor

Polarization-based sensor

35 / 40

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

Low sensitivity to temperature changes

Intrinsic safety

Compatibility with harsh chemicals

36 / 40

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

Rayleigh scattering-based sensor

Raman scattering-based sensor

FBG sensor

37 / 40

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

Fabry-Perot shift

Bragg wavelength shift

Mach-Zehnder shift

38 / 40

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

Interferometric sensor

Intensity-based sensor

Polarization-based sensor

39 / 40

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

Retrieve the measured physical quantity from the optical signal

Amplify the optical signal

Generate the optical signal

40 / 40

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

Evanescent wave sensor

Intensity-based sensor

Polarization-based sensor

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adminApril 10, 2024

0 7 1 minute read