Long Short-Term Memory Neural Network (LSTM-NN) Enabled Accurate Optical Signal-to-Noise Ratio (OSNR) Monitoring

Optical signal-to-noise ratio (OSNR) monitoring is essential to both the operation of reliable and reconfigurable network and the supply of high quality-of-service. Recently, deep learning technique has been proposed for the implementation of OSNR monitoring. However, the potential of deep learning...

Full description

Saved in:
Bibliographic Details
Published in:Journal of lightwave technology 2019-08, Vol.37 (16), p.4140-4146
Main Authors: Wang, Chunxiao, Fu, Songnian, Xiao, Zhuopeng, Tang, Ming, Liu, Deming
Format: Article
Language:English
Subjects:
Accuracy
Adaptive optics
Coherent communications
Deep learning
Feature extraction
Machine learning
Monitoring
Multiplexing
Neural networks
Noise monitoring
Optical communication
Optical fiber networks
Optical fibers
Optical noise
optical performance monitoring
OSNR
Quadrature amplitude modulation
Response time (computers)
Short term
Signal monitoring
Signal to noise ratio
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Optical signal-to-noise ratio (OSNR) monitoring is essential to both the operation of reliable and reconfigurable network and the supply of high quality-of-service. Recently, deep learning technique has been proposed for the implementation of OSNR monitoring. However, the potential of deep learning technique for OSNR monitoring has not been fully exploited in terms of the monitoring accuracy and robust operation. Here, we propose an OSNR monitoring scheme with high accuracy and short response time using the long short-term memory neural network (LSTM-NN). The use of LSTM-NN is helpful to identify the relationship between the time-varied data and corresponding OSNR without manual feature extraction. We investigate the optimal number of time steps for the LSTM-NN-based OSNR monitoring and the monitoring accuracy with respect to various modulation formats with variable baud-rates. Finally, we implement an experimental verification for 34.94-GBd polarization division multiplexing-16 quadrature amplitude modulation signal, achieving a mean absolute error of 0.05 dB over the OSNR range from 15 to 25 dB. The advantages of LSTM-NN-based OSNR monitoring include high accuracy and smart response, which is ideal for future agile optical network.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2019.2904263