Open AccessNoise reduction in 2R-regeneration technique utilizing self-phase modulation and filtering
Author(s) -
Thanh Nam Nguyen,
Laurent Bramerie,
Thierry Chartier,
JeanClaude Simon,
Michel Joindot
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.001737
Subject(s) - filter (signal processing) , optics , noise reduction , modulation (music) , regenerative heat exchanger , phase modulation , noise (video) , computer science , reduction (mathematics) , phase (matter) , phase noise , control theory (sociology) , physics , acoustics , mathematics , artificial intelligence , geometry , heat exchanger , quantum mechanics , image (mathematics) , computer vision , thermodynamics , control (management)
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.