Title :
Generation and detection of QAM in digital coherent systems
Author :
Yu, Jianjun ; Zhou, Xiang
Author_Institution :
ZTE USA, Iselin, NJ, USA
Abstract :
We summarize several novel schemes to generate multilevel modulation formats for high capacity transmission system with high spectral efficiency. We show that multilevel 8QAM, 16QAM, 32QAM and 64QAM optical signals can be generated by commercial optical and electrical devices. We also show new algorithm to improve the performance of blind polarization de-multiplexing in the intra-dyne receiver. Ultra-high-capacity optical transmission experiment of 64Tb/s over 320km at SE=8b/s/Hz has been demonstrated by high-level QAM signals.
Keywords :
blind source separation; demultiplexing; light coherence; optical modulation; optical receivers; optical signal detection; optical transmitters; quadrature amplitude modulation; bit rate 64 Tbit/s; blind polarization demultiplexing; digital coherent systems; distance 320 km; high capacity transmission system; intradyne receiver; multilevel 16QAM; multilevel 32QAM; multilevel 64QAM; multilevel 8QAM; multilevel modulation formats; optical signal generation;
Conference_Titel :
IEEE Photonics Society, 2010 23rd Annual Meeting of the
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4244-5368-9
DOI :
10.1109/PHOTONICS.2010.5698929
