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Relazione tra D e β 2<br />

Al centro della terza finestra, a 1550 nm, si ha:<br />

D = −0.785β<br />

Per una fibra singolo -modo standard, a 1550 nm:<br />

2<br />

[ ]<br />

D≈16 ps/ nmikm β =−<br />

2<br />

2 20[ ps / km]

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