Noise reduction in 2R-regeneration technique utilizing self-phase modulation and filtering.
We numerically investigate the 2R-regeneration technique utilizing self-phase modulation and off-center filtering. Our numerical simulations take into account the incoherent nature of noise through its spectral representation. This approach allows to evaluate a Q-factor improvement of 2 dB for this regenerator. Furthermore, our study points out the role of both the input and the output filter of this regenerator. We show that the input filter must be suitably chosen in order to obtain the best Q-factor improvement. The output filter must also be suitably chosen in order to preserve the modulation format.
Nguyen
Thanh
T
Gay
Mathilde
M
Bramerie
Laurent
L
Chartier
Thierry
T
Simon
Jean-Claude
JC
Joindot
Michel
M