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Performance enhancement of mapping multiplexing technique utilising dual-drive Mach–Zehnder modulator for metropolitan area networks

机译:使用双驱动Mach-Zehnder调制器的城域网映射复用技术的性能增强

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摘要

A methodology to control the eye opening distribution of mapping multiplexing technique (MMT) system is proposed and presented. The authors modelled and analysed a method to enhance the receiver sensitivity of MMT system by using optimised dual-drive Mach-Zehnder modulator. The proposed method offers larger eye opening for distorted Level-3 eyes. Based on the numerical calculation, the optimisation leads toward minimal eye closure. The performance of proposed system is shown to be improved by 6.1 dB in terms of receiver sensitivity compared with the conventional MMT system. Throughout the paper, the authors also discuss a numerical comparative analysis between the proposed MMT model, conventional MMT model, 33% return-to-zero on-off-keying (33%RZ-OOK), 50% RZ-OOK, 67% carrier-suppressed RZ-OOK and 4-ary amplitude shift keying in terms of positive chromatic dispersion tolerance and spectral efficiency.
机译:提出并提出了一种控制映射复用技术(MMT)系统的睁眼分布的方法。作者建模并分析了一种通过使用优化的双驱动Mach-Zehnder调制器来增强MMT系统的接收器灵敏度的方法。所提出的方法为扭曲的Level-3眼睛提供了更大的眼张。基于数值计算,优化可实现最小的眼图闭合。与传统的MMT系统相比,建议的系统在接收器灵敏度方面的性能提高了6.1 dB。在整个论文中,作者还讨论了建议的MMT模型,常规MMT模型,33%归零归零键控(33%RZ-OOK),50%RZ-OOK,67%之间的数值比较分析。载波抑制的RZ-OOK和4进制幅度移位键控在正色散容限和频谱效率方面。

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