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Lana71 [14]
3 years ago
13

Why are noise considerations important in optical fiber communications? 3. Describe the principle of "population inversion".

Physics
1 answer:
pochemuha3 years ago
7 0

Answer and Explanation:

the electronic devices always have some noises present in the signal

there are some important considerations in optical fiber communications these are.

  • the noise which is contributed by transmitter are electronic random noise, low frequency noise
  • noise which is contributed by laser are relative intensity noise, mode partition noise, conversion of phase noise to amplitude noise.
  • noise contributed by photo detector are quantum shot noise, shot noise from dark current, avalanche multiplication noise.

PRINCIPLE OF POPULATION INVERSION :

The principle of population inversion is defined as for production of high percentage of simulated emission for a laser beam the number of atoms in higher state should be greater than lower energy state

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Based on the free-body diagram, the net force acting<br> on this firework is
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3 years ago
A bulldozer does 4,500 J of work to push a mound of soil to the top of a ramp that is 15 m high. The ramp is at an
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<h3>Step 1</h3>

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<h3>Step 2</h3>

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