经 1040km SMF-28 传输后，八通道 50Gb/s PDM-QPSK WDM 信号的外差检测简化相干接收器。
Simplified coherent receiver with heterodyne detection of eight-channel 50 Gb/s PDM-QPSK WDM signal after 1040 km SMF-28 transmission.
机构信息
Department of Communication Science and Engineering, Fudan University, Shanghai 200433, China.
出版信息
Opt Lett. 2012 Oct 1;37(19):4050-2. doi: 10.1364/OL.37.004050.
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.
我们提出并实验演示了一种简化的相干接收机，该接收机基于外差检测，仅使用两个平衡光电探测器和两个模数转换器。与传统方案相比，偏振分集混合器可以得到简化。所检测的中频信号首先通过同相和正交分离下变频到基带。使用此方案，我们仅使用掺铒光纤放大器在 1040km 单模光纤 28 上成功演示了基于数字信号处理的八通道 50Gb/s 偏振分复用正交相移键控 WDM 信号的外差检测，其传输速率为 50Gb/s。
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