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Conference Paper

Influence of Group-Velocity Dispersion on Multilevel Phase-Preserving Amplitude Regeneration in a Nonlinear Amplifying Loop Mirror

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Roethlingshoefer,  Tobias
Optical Communication, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Roethlingshoefer, T., Toth, D., Onishehukov, G., Sehmauss, B., & Leuchs, G. (2012). Influence of Group-Velocity Dispersion on Multilevel Phase-Preserving Amplitude Regeneration in a Nonlinear Amplifying Loop Mirror. In 2012 14TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON 2012). 345 E 47TH ST, NEW YORK, NY 10017 USA: IEEE.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6951-3
Abstract
Numerical simulations have shown a significant influence of group-velocity dispersion (GVD) of the highly nonlinear fiber on the transfer characteristics of a nonlinear amplifying loop mirror (NALM). The effect is especially strong for the anomalous dispersion regime where an interaction of GVD and self-phase modulation (SPM) leads to formation of high-order solitons. The irregularities of the resulting NALM transfer functions can be used for phase-preserving amplitude regeneration of several, irregular-spaced amplitude states for multi-level modulation formats. The regeneration performance was estimated for a 16QAM signal with three amplitude states where a reduction of amplitude noise without significant signal phase distortions has been observed.