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Electronics and communications engineering

41. Nonlinear effects which are defined by the intensity – dependent refractive index of the fiber are called as . . . . . . . .

Scattering effects
Kerr effects
Raman effects
Tomlinson effects
Answer is Right!
Answer is Wrong!

Detailed SolutionNonlinear effects which are defined by the intensity – dependent refractive index of the fiber are called as . . . . . . . .

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42. Which of the following statements best explain the concept of material absorption?

A loss mechanism related to the material composition and fabrication of fiber
A transmission loss for optical fibers
Results in attenuation of transmitted light
Causes of transfer of optical power
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Answer is Wrong!

Detailed SolutionWhich of the following statements best explain the concept of material absorption?

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43. Skew rays follow a . . . . . . . .

Hyperbolic path along the axis
Parabolic path along the axis
Helical path
Path where rays changes angles at core-cladding interface
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Answer is Wrong!

Detailed SolutionSkew rays follow a . . . . . . . .

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44. 3dB optical bandwidth is always . . . . . . . the 3dB electrical bandwidth.

Smaller than
Larger than
Negligible than
Equal to
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Detailed Solution3dB optical bandwidth is always . . . . . . . the 3dB electrical bandwidth.

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45. What is different in case of cross-phase modulation from self-phase modulation?

Overlapping but same pulses
Overlapping but distinguishable pulses
Non-overlapping and same pulses
Non-overlapping but distinguishable pulses
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Detailed SolutionWhat is different in case of cross-phase modulation from self-phase modulation?

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46. When light is described as an electromagnetic wave, it consists of a periodically varying electric E and magnetic field H which are oriented at an angle?

90 degree to each other
Less than 90 degree
Greater than 90 degree
180 degree apart
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Detailed SolutionWhen light is described as an electromagnetic wave, it consists of a periodically varying electric E and magnetic field H which are oriented at an angle?

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47. Which equation is used to calculate MFD?

Maxwell's equations
Peterman equations
Allen Cahn equations
Boltzmann's equations
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Detailed SolutionWhich equation is used to calculate MFD?

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48. The difference between the modes’ refractive indices is called as . . . . . . . .

Polarization
Cutoff
Fiber birefringence
Fiber splicing
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Detailed SolutionThe difference between the modes’ refractive indices is called as . . . . . . . .

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49. Intermodal dispersion in multimode fibers is minimized with the use of step-index fibers.

TRUE
nan
nan
nan
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Detailed SolutionIntermodal dispersion in multimode fibers is minimized with the use of step-index fibers.

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50. Practical pulse broadening value for graded index fiber lies in the range of . . . . . . . .

0.9 to 1.2 ns/km
0.2 to 1 ns/km
0.23 to 5 ns/km
0.45 to 8 ns/km
Answer is Right!
Answer is Wrong!

Detailed SolutionPractical pulse broadening value for graded index fiber lies in the range of . . . . . . . .

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