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Design as optical fiber link for transmitting $15 \mathrm{Mb} / \mathrm{sec}$ of data for a distance of $4 \mathrm{~km}$ with BER of $10^{-9}$.
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written 17 months ago by
prajapatijaimin
• 3.1k
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Solution:
Bandwidth x Length $=15 \mathrm{Mb} / \mathrm{sec} \times 4 \mathrm{~km}=(60 \mathrm{Mb} / \mathrm{sec}) \mathrm{km}$
Selecting optical source: LED at $820 \mathrm{~nm}$ is suitable for short distances. The LED generates $10 \mathrm{dBm}$ optical powers.
Selection of optical fiber: Step-index multimode fiber is selected. The fiber has bandwidth length product of …
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