Impact of Bandwidth Efficiency in Nonlinear Tolerance of Multicarrier Modulations

We report on numerical and experimental comparison of the nonlinear tolerance of multicarrier and single-carrier modulations when changing the bandwidth efficiency. We worked with two different configurations at 24 and 48 GBd DP-QPSK in a 50-GHz spaced WDM grid, using 4 and 8 subcarriers, and we com...

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Veröffentlicht in:	Journal of lightwave technology 2016-04, Vol.34 (8), p.1787-1792
Hauptverfasser:	Meseguer, Alexis Carbo, Renaudier, Jeremie, Rios-Muller, Rafael, Tran, Patrice, Charlet, Gabriel
Format:	Artikel
Sprache:	eng
Schlagworte:	Bandwidth Erbium-doped fiber amplifiers Gain Optical fiber amplifiers Phase shift keying Wavelength division multiplexing
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Beschreibung
Zusammenfassung:	We report on numerical and experimental comparison of the nonlinear tolerance of multicarrier and single-carrier modulations when changing the bandwidth efficiency. We worked with two different configurations at 24 and 48 GBd DP-QPSK in a 50-GHz spaced WDM grid, using 4 and 8 subcarriers, and we compared the results with an equivalent single-carrier system. Both results, numerical and experimental, demonstrate an impact of the bandwidth efficiency in the performance of the multicarrier architecture and indicate that the nonlinear tolerance improvement of the multicarrier approach decreases with the bandwidth efficiency.
ISSN:	0733-8724 1558-2213
DOI:	10.1109/JLT.2015.2510424