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Optical Fiber Sensors Online Flashcards and Quiz
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- Test Name: Optical Fiber Sensors MCQ Quiz Practice
- Type: MCQ’s
- Total Questions: 40
- Total Marks: 40
- Time: 40 minutes
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Optical Fiber Sensors Flashcards
Which type of optical fiber sensor is commonly used for distributed strain sensing in civil engineering structures?
FBG sensor
Which type of optical fiber sensor measures changes in the spectral characteristics of backscattered light?
Rayleigh scattering-based sensor
What is the function of a light source in an optical fiber sensor system?
Generate the optical signal
Which type of optical fiber sensor is commonly used for distributed temperature sensing in harsh environments?
Raman scattering-based sensor
What is the term for the process of retrieving the measured physical quantity from the optical signal in an optical fiber sensor?
Demodulation
Which type of optical fiber sensor measures changes in the intensity of light due to external influences?
Intensity-based sensor
What is the function of an optical coupler in an optical fiber sensor system?
Combine or split optical signals
Which type of optical fiber sensor is suitable for distributed temperature sensing along the length of the fiber?
Rayleigh scattering-based sensor
What is the term for the process of converting the measured physical quantity into an optical signal in an optical fiber sensor?
Modulation
Which type of optical fiber sensor measures changes in the polarization state of light?
Polarization-based sensor
Which type of optical fiber sensor is based on changes in the polarization state of light?
Polarization-based sensor
What is the function of the modulator in an optical fiber sensor system?
Encode the physical quantity onto the optical signal
Which type of optical fiber sensor measures changes in refractive index near the fiber core?
Evanescent wave sensor
What is the term for the region outside the core of an optical fiber where the electric field decreases exponentially?
Evanescent field
Which type of optical fiber sensor is commonly used in biomedical applications such as glucose monitoring?
Polarization-based sensor
Which type of optical fiber sensor is based on changes in the interference pattern caused by external influences?
Interferometric sensor
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
Which type of optical fiber sensor is suitable for distributed sensing along the length of the fiber?
Optical Time Domain Reflectometry (OTDR)
What is the function of a photo-detector in an optical fiber sensor system?
Convert optical signal into electrical signal
Which type of optical fiber sensor uses the interference of light waves to measure temperature?
Interferometric sensor
What is the term for the change in the refractive index of an optical fiber due to external influences?
Sensitivity change
Which type of optical fiber sensor is based on the interference of light waves?
Interferometric sensor
What is the function of a demodulator in an optical fiber sensor system?
Retrieve the measured physical quantity from the optical signal
Which type of optical fiber sensor uses the change in light intensity to detect a physical quantity?
Intensity-based sensor
What is the term for the phenomenon where light travels through the core of an optical fiber and interacts with its surroundings?
Evanescent field
What is the primary advantage of optical fiber sensors over traditional sensors?
Immunity to electromagnetic interference
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