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Experimental estimation of inter-channel nonlinearity power by using differential pilot

机译：用差分飞行员实验估计通道间非线性功率的实验估计

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摘要

In this paper, we present the first experimental demonstration of inter-channel nonlinearity (NL) estimation with differential pilot (DP). This method has a simplified encoding structure of transmitter and low complexity. The distribution of different components in the received signal spectrum can be differentiated with Fast Fourier Transform (FFT), and the inter-channel NL power can be obtained by power subtraction. To verify the practicability of this method, a 25-GBaud coherent quadrature-phase-shift-keying (QPSK) wavelength division multiplexing (WDM) experiment system is employed with the launch power of 0-10 dBm per channel over 900-km standard single-mode fiber (SSMF). The results demonstrate that the inter-channel NL power estimation error is less than 1.5 dB when launch power is larger than 4 dBm per channel. Therefore, this method has good practicability for the inter-channel NL power estimation of coherent WDM systems.
机译：在本文中，我们介绍了使用差分导频（DP）的通道间非线性（NL）估计的第一个实验证明。该方法具有简化的发射器和低复杂性的编码结构。可以利用快速傅里叶变换（FFT）来区分接收信号频谱中不同组件的分布，并且可以通过减法获得通道间NL功率。为了验证该方法的实用性，采用了25-Gbaud相干正交相移键控（QPSK）波分复用（WDM）实验系统，每个通道的发射功率为0-10 dBm，超过900公里标准单-Mode光纤（SSMF）。结果表明，当启动功率大于4 dBm时，通道间NL功率估计误差小于1.5 dB。因此，该方法对相干WDM系统的信道间NL功率估计具有良好的实用性。

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  • 来源
    《Optical fiber technology》 |2020年第9期|102256.1-102256.6|共6页
  • 作者

    Zhou Jingru; Yang Aiying; Guo Peng; Zhuang Lingwei; Guo Shaojian; Qiao Yaojun;

  • 作者单位

    Beijing Univ Posts & Telecommun Sch Informat & Commun Engn State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China;

    Beijing Inst Technol Sch Opt & Photon Minist Ind & Informat Technol Key Lab Photon Informat Technol Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Opt & Photon Minist Ind & Informat Technol Key Lab Photon Informat Technol Beijing 100081 Peoples R China;

    Beijing Univ Posts & Telecommun Sch Informat & Commun Engn State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China;

    Beijing Univ Posts & Telecommun Sch Informat & Commun Engn State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China;

    Beijing Univ Posts & Telecommun Sch Informat & Commun Engn State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Coherent optical communication; Inter-channel nonlinearity (NL); Differential pilot (DP);

    机译：相干光通信;通道间非线性（NL）;差分导频（DP）;

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