Orthogonal Basis Expansion-Based Phase Noise Suppression for PDM CO-OFDM System
Orthogonal Basis Expansion-Based Phase Noise Suppression for PDM CO-OFDM System
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DOI：
10.1109/lpt.2013.2293515
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发表时间：
2014-02
影响因子：
2.6
通讯作者：
Xi Fang;Chuanchuan Yang;Tingting Zhang;Fan Zhang
中科院分区：
文献类型：
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作者：
Xi Fang;Chuanchuan Yang;Tingting Zhang;Fan Zhang
在这封信中，我们开发了一种用于偏振分复用（PDM）相干光正交频分复用（CO-OFDM）系统的基于正交基扩展（OBE）的相位噪声抑制方法。与传统的相位噪声抑制方法相比，OBE方法不仅显着提升了系统对激光相位噪声的容忍度，而且提高了系统对非线性相位噪声的鲁棒性。通过 16 正交调幅格式的 PDM CO-OFDM 系统的数值模拟验证了理论分析。
In this letter, we develop an orthogonal basis expansion (OBE)-based phase noise suppression method for polarization-division-multiplexed (PDM) coherent optical orthogonal frequency-division-multiplexing (CO-OFDM) systems. Compared with the conventional phase noise suppression approach, the OBE method not only significantly promotes the system tolerance of laser phase noise, but also improves the system robustness against nonlinear phase noise. The theoretical analysis is validated by numerical simulations of PDM CO-OFDM systems with 16-quadrature-amplitude-modulation format.