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ECE · all questions

Optical Communication
practice.

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

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The nonlinear effects in optical fibers are large.

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Mie scattering has in-homogeneities mainly in . . . . . . . .

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What is refraction?

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How many propagation modes are present in single mode fibers?

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Self-phase modulation causes modifications to the pulse spectrum.

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Rayleigh scattering and Mie scattering are the types of . . . . . . . .

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

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Which is the most important velocity in the study of transmission characteristics of optical fiber?

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Most of the power in an optical fiber is transmitted in fiber cladding.

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When the input and output power in an optical fiber is 120μW & 3μW respectively and the length of the fiber is 8 km. What is the signal attenuation per km for the fiber?

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What is the unit of normalized frequency?

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What does ISI stand for in optical fiber communication?

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Which law gives the relationship between refractive index of the dielectric?

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The variant of non-zero-dispersion-shifted fiber is called as . . . . . . . .

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. . . . . . . . zsemiconductor laser sources generally have broader bandwidths.

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

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How many mechanisms are there which causes absorption?

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In the given equation, state what αr suggests?

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For no overlapping of light pulses down on an optical fiber link, the digital bit rate BT must be . . . . . . . .

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