Adaptive Pulse Shaping Through BER Feedback

Adaptive Pulse Shaping Through BER Feedback

In this paper, we propose a simplified approach to optical signal predistortion based on adaptive pulse shaping through asymmetrical control of a Mach-Zehnder modulator above its switching voltage. The scheme allows natural tailoring of transmitted pulses by optimizing the received pulse. We demonst...

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Veröffentlicht in:Journal of lightwave technology 2009-09, Vol.27 (17), p.3765-3772
Hauptverfasser: Webb, S.M., Ellison, J.G., Desbruslais, S.R., Fedoruk, M.P., Turitsyn, S.K.
Format: Artikel
Sprache:eng
Schlagworte:
Adaptive control
Adaptive control systems
Adaptive optics
Adaptive pulse shaping
Asymmetry
BER feedback
Bit error rate
Channels
Dispersions
fiber optics
Modulators
Optical feedback
Optical modulation
Optical pulse shaping
Optical pulses
Optimization
Predistortion
Programmable control
Pulse shaping methods
signal preprocessing
Tolerances
transmission
Voltage
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Beschreibung
Zusammenfassung:In this paper, we propose a simplified approach to optical signal predistortion based on adaptive pulse shaping through asymmetrical control of a Mach-Zehnder modulator above its switching voltage. The scheme allows natural tailoring of transmitted pulses by optimizing the received pulse. We demonstrate enhancement of the power tolerance in nonrepeated systems and improved OSNR/BER performance and dispersion tolerance in ultra-long-haul fiber systems operating at 10 Gb/s and 20 Gb/s channel rates. The improved performance is demonstrated through simulations and experiment.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2008.2005553