Reply To: Difference between using optical amplifier and EDFA

[aasif bashir darParticipant]

hi aabid,

i got you point.

but mostly the amplifiers which we use in channel , commercially are all-optical.there is no conversion of optical to electrical and then back to optical form.
EDFA: uses erbium doped fiber,
raman amplier: uses non liner effects,
hybrid uses combination of both of them.

however there are amplifiers like SOA which is not all -optical.

with regards