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首页> 外文会议>Conference on Optical Transmission, Switching, and Subsystems >Nonlinear limitation of 10Gbit/s NRZ electrical pre-distortion system
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Nonlinear limitation of 10Gbit/s NRZ electrical pre-distortion system

机译：10Gbit / S NRZ电气预失真系统的非线性限制

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摘要

In this paper, we study the nonlinear limitation of 10Gbit/s NRZ electronic pre-distortion (EPD) system by simulating. We constructed an ideal EPD simulation system with all chromatic dispersion compensation in electrical domain in transmitter; the fiber link includes Erbium-doped Optical Fiber Amplifier (EDFA) and 50km single mode fiber (SMF) in each span. And a dispersion compensation fiber (DCF) compensation system as a comparing object, with the fiber link includes EDFA, 50km SMF and DCF in each span. In, single channel case, we find the EPD system is more sensitive with (self-phase modulation) SPM effect than DCF compensation system; in wavelength division multiplexing (WDM) system with lOOGHz channel space, the cross-phase modulation (XPM) effects in EPD system induces more penalty fluctuating than DCF system. This is due to the large power variations in the waveform after large dispersion pre-compensation necessary for EPD. By compensating SPM effect and chromatic dispersion simultaneous in electrical domain in transmitter ideally, we can suppress SPM effect successfully in single channel system; but for WDM system, XPM effect still induces larger penalty fluctuating than DCF system. Because we can not predict signal patterns of neighbor channel, that means we can not compensate XPM effect. So, the XPM effect is the final nonlinear limitation of 10Gbit/s NRZ EPD WDM system.
机译：在本文中，我们通过模拟研究了10Gbit / s NRZ电子预失真（EPD）系统的非线性限制。我们构建了一个理想的EPD仿真系统，在发射机中的电气域中的所有色散补偿;光纤链路包括每个跨度的掺铒光纤放大器（EDFA）和50km单模光纤（SMF）。和一个色散补偿光纤（DCF）补偿系统作为比较对象，光纤链路包括每个跨度的EDFA，50km SMF和DCF。在单通道外壳中，我们发现EPD系统比DCF补偿系统更敏感（自相调制）SPM效果;在具有LOOGHz信道空间的波分复用（WDM）系统中，EPD系统中的互相调制（XPM）效应诱导比DCF系统更多的罚款波动。这是由于EPD所需的大型色散预补偿后波形的功率变化很大。通过理想地通过补偿SPM效应和色散在发射器中的电域中的色散，我们可以在单通道系统中成功抑制SPM效果;但对于WDM系统，XPM效应仍然比DCF系统诱导更大的罚款波动。因为我们无法预测邻居频道的信号模式，这意味着我们无法补偿XPM效果。因此，XPM效果是10Gbit / s NRZ环路WDM系统的最终非线性限制。

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