MCQ On Optical Fiber Part 4: Optical Fiber Q & A

MCQ On Optical Fiber Part 4. This part has 10 Multiple Choice Questions on Optical Fibers.


MCQ On Optical Fiber Part 4 


Which line code in PCM indicates the return of signal to zero between each pulse & takes place even due to the occurrence of consecutive 0’s & 1’s in the signal ??

a. Return-to-zero (RZ)
b. Non-Return to zero space
c. Return to zero inverted
d. Non-return to zero inverted


In the structure of the fiber, the light is guided through the core due to total internal ______ ??

a. reflection
b. refraction
c. diffraction
d. dispersion


In the structure of a fiber, which component provides additional strength and prevents the fiber from any damage ??

a. Core
b. Cladding
c. Buffer Coating
d. None of the above


Which is the transmission medium for VLF electromagnetic waves especially applicable for aeronautical and submarine cables ??

a. Paired wires
b. Coaxial cable
c. Waveguide
d. Wireless


Which rays exhibit the variation in the light acceptability ability of the fiber ??

a. Meridional
b. Skew
c. Leaky
d. All of the above


MCQ On Optical Fiber Part 4 


If a fiber operates at 1400nm with the diameter of about 10 μm, n1 = 1.30, Δ = 0.80% , V = 3.5, then how many modes will it have ??

a. 6.125
b. 9.655
c. 12.95
d. 16.55


Which kind of dispersion phenomenon gives rise to pulse spreading in single-mode fibers ??

a. Intramodal
b. Intermodal
c. Material
d. Group Velocity


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 ??

a. Mode field diameter
b. Birefringence
c. Fiber beat length
d. Spot Size


On which of the following factor/s do/does the ‘Hydrogen Effect’ depend/s ?? 

a. Type of fiber & Cable Design
b. Operating Wavelength
c. Installation Method
d. All of the above


Consider the statements given below. Which among them is not a drawback of the double crucible method ??

a. Utility in mass production of fibers
b. High attenuation
c. High OH content in drawn fiber
d. Addition of impurity while the fiber is drawn


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