A family of Nyquist pulses for coherent optical communications

作者：Chatelain Benoit^*; Laperle Charles; Roberts Kim; Chagnon Mathieu; Xu Xian; Borowiec Andrzej; Gagnon Francois; Plant David V

来源：Optics Express, 2012, 20(8): 8397-8416.

DOI：10.1364/OE.20.008397

A new family of Nyquist pulses for coherent optical single carrier systems is introduced and is shown to increase the nonlinearity tolerance of dual-polarization (DP)-QPSK and DP-16-QAM systems. Numerical investigations for a single-channel 28 Gbaud DP-16-QAM long-haul system without optical dispersion compensation indicate that the proposed pulse can increase the reach distance by 26% and 19%, for roll-off factors of 1 and 2, respectively. In multi-channel transmissions and for a roll-off factor of 1, a reach distance increase of 20% is reported. Experimental results for DP-QPSK and DP-16-QAM systems at 10 Gbaud confirm the superior nonlinearity tolerance of the proposed pulse.

• 出版日期2012-4-9