Title :
Experimental comparison of two 8-QAM constellations at 200 Gb/s over ultra long-haul transmission link
Author :
Rios-Muller, R. ; Renaudier, Jeremie ; Tran, P. ; Charlet, G.
Author_Institution :
Bell Labs. Alcatel-Lucent, Nozay, France
Abstract :
We report on the non-linear performance comparison between two 8QAM modulation formats using Nyquist pulse shaping. Although less tolerant to phase noise and frequency detuning, we show that the Circular-8QAM format outperforms the Star-8QAM by 0.5 dB after transmission.
Keywords :
optical fibre communication; optical modulation; phase noise; quadrature amplitude modulation; 8-QAM constellations; Nyquist pulse shaping; bit rate 200 Gbit/s; circular-8QAM format; frequency detuning; nonlinear performance comparison; phase noise; star-8QAM; ultra long-haul transmission link; Erbium-doped fiber amplifiers; Modulation; Optical fiber networks; Optical noise; Phase estimation; Signal to noise ratio; Stimulated emission;
Conference_Titel :
Optical Communication (ECOC), 2014 European Conference on
Conference_Location :
Cannes
DOI :
10.1109/ECOC.2014.6963879
