摘要
We propose the configuration of signal multiplexing with four polarization states and investigate its transmission performance over single-mode fiber links.Using coherent detection and digital signal processing,a demodulation scheme for four-polarization-multiplexed(4PM)system is presented.We discuss the impact of crosstalk from polarization mode dispersion and polarization beam splitter misalignment on the proposed 4PM system.Furthermore,the transmission distance could be doubled to*50 km by employing feedback decision equalizers.
We propose the configuration of signal multi- plexing with four polarization states and investigate its transmission performance over single-mode fiber links. Using coherent detection and digital signal processing, a demodulation scheme for four-polarization-multiplexed （4PM） system is presented. We discuss the impact of crosstalk from polarization mode dispersion and polarization beam splitter misalignment on the proposed 4PM system. Furthermore, the transmission distance could be doubled to -50 km by employing feedback decision equalizers.
基金
supported by the National Basic Research Program of China(‘‘973’’Program)(2012CB315704)
the National Natural Science Foundation of China(61275068,61111140390)
关键词
数字信号处理
偏振复用
传输性能
解调
PM系统
偏振分束器
偏振模色散
光纤链路
Optical communication
Polarizationdivision multiplexing
Polarization mode dispersion
Coherent detect
Feedback decision equalizer
