Simplified coherent receiver with heterodyne detection of eight-channel 50 Gb/s PDM-QPSK WDM signal after 1040 km SMF-28 transmission.
Simplified coherent receiver with heterodyne detection of eight-channel 50 Gb/s PDM-QPSK WDM signal after 1040 km SMF-28 transmission.
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DOI：
10.1364/ol.37.004050
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发表时间：
2012-10
期刊：
影响因子：
3.6
通讯作者：
Junwen Zhang;Z. Dong;Jianjun Yu;N. Chi;Li Tao;Xinying Li;Yufeng Shao
中科院分区：
文献类型：
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作者：
Junwen Zhang;Z. Dong;Jianjun Yu;N. Chi;Li Tao;Xinying Li;Yufeng Shao
我们提出并实验证明了一种基于外差检测的简化相干接收机，它只有两个平衡型光电探测器和两个模数转换器。相对于传统的极化分集混合技术，极化分集混合技术可以得到简化。检测到的中频信号首先通过同相和正交分离被下变频到基带。利用该方案，基于数字信号处理的8路50 Gb/S正交移相键控外差检测波分复用信号在1040 km的单模光纤28上实现了外差检测。
We propose and experimentally demonstrate a simplified coherent receiver based on heterodyne detection with only two balanced photodetectors and two analog-to-digital converters. The polarization diversity hybrid can be simplified relative to the conventional one. The detected intermediate frequency signals are first downconverted to baseband with inphase and quadrature separation. Using this scheme, we successfully demonstrated the eight-channel 50 Gb/s polarization division multiplexed quadrature phase shift keying WDM signal with heterodyne detection based on digital signal processing over 1040 km single-mode fiber 28 with erbium-doped fiber amplifier only amplification.