Pan Yan, Yan Lianshan, Yi Anlin, Jiang Lin, Pan Wei, Luo Bin
Opt Express. 2019 Feb 4;27(3):1869-1876. doi: 10.1364/OE.27.001869.
Simultaneous transmission of two polarization-division-multiplexing four-level pulse-amplitude-modulation (2 × PDM-PAM4) signals is proposed, and a simplified receiver is used for demultiplexing two data streams. Experimental results at 160-Gbit/s show that the power penalty of each data stream is ~0.4-dB (back-to-back) and ~1-dB (25-km transmission) compared with the single PDM system. Furthermore, the stabilization of the proposed scheme is investigated. The BER fluctuation is <0.5-dB at a polarization scrambling rate up to 1417.5-deg/s.
提出了同时传输两个偏振分复用四电平脉冲幅度调制（2×PDM-PAM4）信号的方案，并使用简化接收机对两个数据流进行解复用。160 Gbit/s的实验结果表明，与单偏振分复用（PDM）系统相比，每个数据流的功率代价在背对背情况下约为0.4 dB，在25 km传输情况下约为1 dB。此外，还研究了所提方案的稳定性。在高达1417.5°/s的偏振扰码速率下，误码率（BER）波动小于0.5 dB。
