Theoretical and experimental study on PMD-supported transmission using polarization diversity in coherent optical OFDM systems.
Theoretical and experimental study on PMD-supported transmission using polarization diversity in coherent optical OFDM systems.
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DOI：
10.1364/oe.15.009936
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发表时间：
2007-08
期刊：
影响因子：
3.8
通讯作者：
William Shieh;Xingwen Yi;Yiran Ma;Yan Tang
中科院分区：
文献类型：
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作者：
William Shieh;Xingwen Yi;Yiran Ma;Yan Tang
本文对相干光正交频分复用（CO-OFDM）系统中偏振模色散（PMD）支持的传输进行了理论和实验研究。首先，我们提出了模型的光纤通信信道中存在的偏振效应。结果表明，光纤信道模型可以看作是一种特殊的多输入多输出（MIMO）模型，即一种二输入二输出（蒂托）模型，它本质上是由光通信界所熟悉的二元琼斯矢量表示的。详细讨论了各种相干光MIMO-OFDM（CO-MIMO-OFDM）模型。此外，我们展示了第一个实验的极化分集检测的CO-OFDM系统。特别地，在10.7 Gb/s的CO-OFDM信号在900 ps的差分群延迟（DGD）和1000 km的传输之后通过SSMF光纤在没有光色散补偿的情况下被成功地恢复。高阶PMD的传输实验进一步证实了CO-OFDM信号在传输光纤中对PMD的免疫性。还报道了PMD支持的传输的非线性性能。首次在CO-OFDM传输中，实验证明了基于接收机数字信号处理的非线性相位噪声抑制。
In this paper, we conduct theoretical and experimental study on the PMD-supported transmission with coherent optical orthogonal frequency-division multiplexing (CO-OFDM). We first present the model for the optical fiber communication channel in the presence of the polarization effects. It shows that the optical fiber channel model can be treated as a special kind of multiple-input multiple-output (MIMO) model, namely, a two-input two-output (TITO) model which is intrinsically represented by a two-element Jones vector familiar to the optical communications community. The detailed discussions on various coherent optical MIMO-OFDM (CO-MIMO-OFDM) models are presented. Furthermore, we show the first experiment of polarization-diversity detection in CO-OFDM systems. In particular, a CO-OFDM signal at 10.7 Gb/s is successfully recovered after 900 ps differential-group-delay (DGD) and 1000-km transmission through SSMF fiber without optical dispersion compensation. The transmission experiment with higher-order PMD further confirms the immunity of the CO-OFDM signal to PMD in the transmission fiber. The nonlinearity performance of PMD-supported transmission is also reported. For the first time, nonlinear phase noise mitigation based on receiver digital signal processing is experimentally demonstrated for CO-OFDM transmission.