MRV Communications EM316EDFA-LPR Manual do Utilizador descarregar pdf (Página 35)

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Cédric Ware <[email protected]>

2011

Document License

Pum conﬁguration

Phase matching: k

phonon

may be large or small compared to k

opt

for

similar frequencies, so pumping can be copropagating

(k

p

= k

s

+ k

phonon

) or counterpropagating (−k

p

= k

s

− k

0

phonon

)

But: very fast eﬀect ⇒ transfers pump noise to signal

If counterpropagating pump, noise ends up averaged over each bit

⇒ Counterpropagating pump

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