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Phase-preserving multilevel amplitude regeneration using a modified nonlinear amplifying loop mirror

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6 Author(s)
Hierold, M. ; Dept. of Microwave Eng., Univ. of Erlangen-Nuremberg, Erlangen, Germany ; Roethlingshoefer, T. ; Sponsel, K. ; Onishchukov, G.
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Optimization of NALM parameters for phase-preserving amplitude regeneration of a multilevel star8-QAM signal was performed in numerical simulations. A Q-factor improvement of 5 dB for each amplitude level was shown. Possibilities of performance improvement using a power-dependent nonlinear phase shift and a nonlinear amplifier gain were investigated. A Q-factor improvement up to 11 dB for each level was obtained.

Published in:

Transparent Optical Networks (ICTON), 2010 12th International Conference on

Date of Conference:

June 27 2010-July 1 2010