Impact of Third-Order Fiber Nonlinearities on Optical WDM Communication Systems

Kazovsky波分复用（WDM）作为从局域网（LAN）到广域网（WAN）的未来光网络的关键技术正在迅速发展。 三阶光纤非线性（自相位调制（SPM）、交叉相位调制（XPM）和四波混频（FWM））限制了WDM网络的容量。 我们建议调查，从理论上和实验上，XPM和FWM产生的一个波长通道上的其他人的效果，通过调查这些效果产生的幅度和频率噪声的统计。 我们将定量评估XPM和FWM对系统性能的影响，如误码率（BER）和眼图闭合。 我们将研究通过改变光功率、波长数、信道间隔、调制频率和格式、色散、编码、偏振和接收器类型来最大限度地减少XPM和FWM影响的技术。 通过这项调查，我们将开发的影响，WDM系统的XPM和FWM的定量模型，技术，以尽量减少这种影响，和技术，以实现最佳的系统性能符合不可避免的存在，在这样的网络中的非线性效应。 ***

9417595 Kazovsky Wavelength-division multiplexing (WDM) is rapidly evolving as a key technology for future optical networks ranging from local area networks (LANs) to wide-area networks (WANs). Third-order fiber nonlinearities (self-phase modulation (SPM), cross-phase modulation (XPM) and four-wave mixing (FWM) set limit on the capacity of WDM networks. We propose to investigate, both theoretically and experimentally, the effect of XPM and FWM produced on one wavelength channel by the others, by investigating the statistics of amplitude and frequency noise produced by these effects. We will quantitatively evaluate penalties imposed by XPM and FWM on measure on system performance, such as bit error rate (BER) and eye closure. We will investigate techniques for minimizing the impact of XPM and FWM by varying optical power, number of wavelengths, channel spacing, modulation frequency and format, dispersion, coding, polarization, and receiver type. Through this investigation, we will develop quantitative models of the impact of XPM and FWM on WDM systems, techniques to minimize this impact, and techniques to achieve optimum system performance consistent with the unavoidable presence of nonlinear effects in such networks. ***