Semiconductor Laser Amplifiers
- Semiconductor laser amplifiers
are used, however they are not free
of problems.
- All amplifiers amplify an incoming signal but also
add noise to the signal
which is not desirable!
Semiconductor laser amplifiers have
a poor noise performance:
they add a lot of noise to the signal!
- Matching with the fibre
is also a problem!
- However, they are small and
cheap!
Most of these problems have been overcome with the use of
Erbium-Doped Fibre Amplifiers