Publication: Deep Neural Network-Based QoT Estimation for SMF and FMF Links
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Publication date
2023-03-15
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IEEE
Abstract
Quality of transmission (QoT) estimation tools for
fiber links are the enabler for the deployment of reconfigurable
optical networks. To dynamically set up lightpaths based on traffic
request, a centralized controller must base decisions on reliable
performance predictions. QoT estimation methods can be categorised in three classes: exact analytical models which provide
accurate results with heavy computations, approximate formulas
that require less computations but deliver a reduced accuracy, and
machine learning (ML)-based methods which potentially have high
accuracy with low complexity. To operate an optical network in
real-time, beside accurate QoT estimation, the speed in delivering
results is a strict requirement. Based on this, only the last two
categories are candidates for this application. In this paper, we
present a deep neural network (DNN) structure for QoT estimation considering both regular single-mode fiber (SMF) and future
few-mode fiber (FMF) proposed to increase the overall network
capacity. We comprehensively explore ML-based regression methods for estimating generalized signal-to-noise ratio (GSNR) in
partial-load SMF and FMF links. Synthetic datasets have been
generated using the enhanced Gaussian noise (EGN) model. Results
indicate that the proposed DNN-based regressor can provide better
accuracy along with less computation complexity, compared with
other state-of-the-art ML methods as well as closed-form-EGN and
closed-form-GN models
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Keywords
Deep neural network, Few-mode fiber, Quality of transmission estimation, Transmission estimation, Regression, Single-mode fiber
Bibliographic citation
Amirabadi, M. A., Kahaei, M. H., Nezamalhosseini, S. A., Arpanaei, F., & Carena, A. (2023). Deep Neural Network-Based QoT Estimation for SMF and FMF Links. Journal Of Lightwave Technology, 41(6), 1684-1695