MRV Communications EM316EDFA-LPR Manual de usuario Pagina 36

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Cédric Ware <[email protected]>
2011
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Raman amplifier = distributed amplification
Localized amplifiers: between fiber spans
Distributed amplifiers: gain along tail of transmission
less attenuation noise, better overall noise figure.
hνB
o
/2
60
40
20
0 100 200 300km
Signal
Noise
S (dist.)
N (dist.)
dB
m
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