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Optical Fiber Communication MCQs
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Optical Fiber Communication MCQs
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25 Questions

1. In pyroelectric photodetectors, the consequent increase in dielectric constant due to temperature variation by the photon absorption, is generally measured as change in _______
2. In the structure of fiber, the light is guided through the core due to total internal ______
3. Consider the assertions/ characteristics given below. Which type of attenuation measurement technique exhibits these characteristics? Necessity of accessing both ends of fiber. Measurements corresponding to specific wavelengths. Requirement of spectral response over a range of wavelengths.
4. Which type of mechanical splicing exhibits the permanent bonding of prepared fiber ends with the rigid alignment of the tube?
5. According to frequency response of photo-detector, the modulation frequency at which the output current decreases to ________of peak value.
6. What is/ are the consequence/s of Self Phase Modulation in non-linear optics?
7. In Lambertian output pattern of LED, the source is ______ bright from all directions.
8. Which among the following characteristics of Laser light specifies the precise movement of all individual light waves together through time and space?
9. Which type of preamplifier plays a crucial role in reducing the effect of thermal noise?
10. On which of the following factor/s do/does the ‘Hydrogen Effect’ depend/s?
11. Which component of fiber-optic connector has a provision of entry for the fiber along with the fixation to connector housing?
12. Which component of an optical receiver is a linear frequency shaping filter used for the compensation of signal distortion and Inter Symbol Interference (ISI)?
13. In an optical fiber, the concept of Numerical aperture is applicable in describing the ability of __________
14. Which nature of charge carriers give rise to the current fluctuations thereby resulting into the generation of shot noise?
15. For a photo-diode with responsivity of 0.50 A/W & optical power of about 12μW, what would be the value of generated photocurrent?
16. Which type of photonic crystal fiber exhibit/s its/their similarity to the periodic crystalline lattice in a semiconductor?
17. Which among the following is/are responsible for generating attenuation of an optical power in fiber?
18. The small section of fiber which is coupled to the optical source is known as _________
19. Which among the following is/are determined by the fiber characterization?
20. Which modes are acknowledged due to their association with electromagnetic field and beam profile in the direction perpendicular to the plane of pn junction?
21. Which photodiodes are crucially applicable to overcome the bandwidth-quantum efficiency trade-off along with its resemblence to the pyramid structure?
22. In fiber fault location, the equation of length (l) for time difference (t) is expressed as L = ct / 2n1 . Which factor in this equation implies that the light travels a length from source to break point and then through another length on the return trip?
23. What is the typical value of refractive index for an ethyl alcohol?
24. With respect to single mode and graded index fibers, which parameter specifies the propagation of polarization modes with different phase velocities & the difference between their effective refractive indices?
25. Consider the statements given below. Which among them is not a drawback of double crucible method?