OSNR Monitoring Using Signal Power Nonlinear Transformation

LIU Heng-jiang; YI An-lin

doi:10.13756/j.gtxyj.2019.05.003

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OSNR Monitoring Using Signal Power Nonlinear Transformation

- OSNR Monitoring Using Signal Power Nonlinear Transformation
- Study on Optical communication Issue 5, Pages: 14-18(2019)
- 作者机构：
  
  西南交通大学信息科学与技术学院信息光子与通信研究中心
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2019.05.003
  CLC： TN929.1
- Published：2019，
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[1]刘恒江,易安林.基于信号功率非线性变换的光信噪比监测[J].光通信研究,2019(05):14-18.

LIU Heng-jiang, YI An-lin. OSNR Monitoring Using Signal Power Nonlinear Transformation. [J]. (5):14-18(2019)
[1]刘恒江,易安林.基于信号功率非线性变换的光信噪比监测[J].光通信研究,2019(05):14-18. DOI： 10.13756/j.gtxyj.2019.05.003.

LIU Heng-jiang, YI An-lin. OSNR Monitoring Using Signal Power Nonlinear Transformation. [J]. (5):14-18(2019) DOI： 10.13756/j.gtxyj.2019.05.003.

摘要

基于信号功率非线性变换

结合神经网络

文章提出了一种利用深度神经网络（DNN）实现光信噪比（OSNR）监测的方法。通过对信号功率、信号2次方、4次方和8次方运算后对应的快速傅里叶变换（FFT）后的幅度获取信号与OSNR相关特征量

并利用DNN提取相关特征量以实现OSNR监测。仿真结果表明

针对28 Gbaud偏振复用（PDM）正交相移键控（QPSK）、PDM-8相移键控（PSK）、PDM-8正交振幅调制（QAM）和PDM-16QAM信号相干光通信系统

对应的背靠背OSNR监测平均标准误差分别为0.10、0.09、0.33和0.46 dB。对这4种调制格式

在入纤功率分别为4、4、3和3 dBm

传输距离分别为2 000、1 040、1 040和800 km单模光纤时

获得的OSNR监测平均标准误差分别为0.43、0.34、0.66和0.79 dB。

Abstract

This paper proposes and demonstrates an Optical Signal Noise Ratio（OSNR） monitoring scheme using the signal power nonlinear transformation and Deep Neural Networks（DNN）. The features of signal after 2

and 8

transformation and corresponding Fast Fourier Transformation（FFT） depend on the OSNR of signal. By utilizing the DNN to extract those OSNR depended specific features

the OSNR value can be estimated. Simulation results for 28 Gbaud Polarization Division Multiplexing（PDM）-Quadrature Phase Shift Keying（QPSK）

PDM-8 Phase Shift Keying（PSK）

PDM-8 Quadrature Amplitude Modulation（QAM） and PDM-16 QAM signals show that the OSNR monitoring with mean estimation standard errors of 0.10

0.09

0.33 and 0.46 dB in back-to-back case and 0.43

0.34

0.66 and 0.79 dB in 2 000

1 040

1 040 and 800 km single mode fiber transmission case with input optical power of 4

3 and 3 dBm

respectively.

关键词

光信噪比监控深度神经网络相干光通信

Keywords

OSNR monitoringDNNcoherent optical communication

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