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July 21, 2017UncategorizedBy classhelp24@gmail.com [email if you need fresh paper done]
  1. Fiber has attenuation of 0.00435 dB/m. ?What is the total attenuation of 10-km length?
  2. If 10 mW of light enters the 10-km fiber in Problem , how much light remains at the output end?
  3. You lose 1.0 dB coupling a 1-mW light source into an optical fiver. ?You need a signal of 0.1 mW at the other end. ?How far can you send a signal through fiver with attenuation of 0.5 dB/km?
  4. You transmit an instantaneous pulse through a 20-km multimode fiber with total dispersion of 10 ns/km at the signal wavelength. ?What will the pulse length be at the end?
  5. You transmit a 100-ns pulse through the same fiber used in Problem 4. What will the pulse length be at the end?
  6. You transmit an instantaneous pulse through a 10-km single mode fiber with chromatic dispersion of 10 ps/nm-km at the signal wavelength. ?The spectral width of the input pulse is 2 nm. ?What is the pulse length at the end of the fiber?
  7. You transmit an instantaneous pulse through a 20-km single mode fiber with chromatic dispersion of 10 ps/nm-km at the signal wavelength. ?This time you’ve spent an extra $2000 for a super duper laser with spectral width of only 0.002 nm. ?What is the pulse length at the end of the fiber?
  8. A single-mode fiver ?has material dispersion of 20 ps/nm-km and waveguide dispersion of -15 ps/nm-km at the signal wavelength. ?What is the total chromatic dispersion?
  9. You send 200-ps pulse thorugh a 100-km length of the fiber in a Problem 8, using a laser with spectral width of 0.002 nm. ?What is the width of the output pulse?
  10. An optical fiber 125 um in diameter can withstand a force of 600,000 lb/in. ?What’s the heaviest load it could support?
  11. Your job is to send a signal at the highest data rate possible through 2500 km of fiber with polarization-mode dispersion of 1 ps/km -1/2. ?Neglecting all other types of dispersion, what is the best you can do, remembering that polarization-mode dispersion should accumulate to no more than 1/10th the interval between pulse?

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