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problem 1) describe the transmission of light through single mode fiber using simple ray theory concept. prepare down the main advantages of this type of fiber?

problem 2) A graded index fiber with a parabolic refractive index profile core has a refractive index at core axis of 1.5 and relative index difference of 1%. Compute the maximum possible core diameter that allows single mode operation at wavelength of 1.3μm?

b) Describe the different errors which occur in detection mechanism?

problem 3) Describe about RZ and NRZ coding and their effects on the bit rate.

b) Describe the effect of mode mixing factor on model dispersion for computing the maximum allowable transmission data rate in fiber optic link.

problem 4) prepare brief note on the following:

a) Sensitivity degradation

b) Measurement of dispersion

c) Losses in optical fiber

d) TDM

e) Need of pre compensation

problem 5)a) Sketch the structure of an erbium doped fiber amplifier and describe the function of each component.

b) An ultra short pulse optical fiber soliton system for long haul transmission has the dispersion length much smaller than optical amplifier spacing. The second order dispersion coefficient is -0.125 ps2 Km–1. When soliton pulse width 4 ps with the bit period of 40 ps, find out the maximum transmission bit rate for the system.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M99581

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