
Page 33 / 40
2011
Document License
Brillouin scattering
Phase matching: k
phonon
∝ ω
phonon
thus, for significant frequency
difference (hence gain), need large k
phonon
.
⇒ counterpropagating pump (−k
p
= k
s
− k
0
phonon
).
Very narrow bandwidth: few 10 MHz.
⇒ Application: possibly low-bitrate WDM demultiplexing.
→ Mostly, parasitic effect that limits optical power.
Comentários a estes Manuais