摘要
Coherent optical orthogonal frequency division multiplexing(CO-OFDM)is considered as a key solution for long haul optical fiber communication systems thanks to its high spectral efficiency and robustness against chromatic dispersion.We have investigated a CO-OFDM based on quadrature phase shift keying(QPSK)-OFDM and 16 quadrature amplitude modulation(16 QAM)-OFDM over 500 km uncompensated fiber links.The simulation results show that the proposed system is a promising solution to meet the aggregate data rate demands cost effectively in future high-speed optical communication systems.
基金
The author would like to acknowledge the Alexander von Humboldt Foundation,for their support.
