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Quality of transmission (QoT) prediction, one of the essential technologies to enable low-margin automatic optical networks, has recently attracted increasing interest among researchers [1]. Analytical model-based QoT estimation, such as the GNPy software, provides system-level optimization for static operations [2]. However, in low-margin dynamic optical networks, QoTs should be predicted based on traffic payload, link configurations, and other parameters to obtain precise QoTs for dynamic configurations with further reduced link margins. In [3], a point-to-point multi-channel QoT prediction based on artificial neural networks(ANN) was proposed, however, lacking end-to-end solutions in terms of training and deployment. P. Safari, etc., developed a network-wide model
for QoT classification based on a deep convolutional neural network (DCNN) model [4]. However, the complex DCNN model strongly depends on network typologies and requires a huge amount of data from the whole network. which makes it infeasible to train and deploy the model in a practical optical network. In this paper, two cascaded multi-channel ANN models are developed, co-trained, and demonstrated to predict link penalties over a 986-km field-trial testbed consisting of two links and ROADMs. With the two-cascaded ANN setting, the QoT of a channel over the two links is predicted considering traffic payloads in two links with precision of ± 0.16 dB. The co-training of the two cascaded penalty prediction models also provides a feasible solution to provide network-level QoT predictions.
Original languageEnglish
Title of host publication2023 Optical Fiber Communications Conference and Exhibition, OFC 2023 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages3
ISBN (Electronic)978-1-957171-18-0
ISBN (Print)979-8-3503-1229-4
Publication statusPublished - 19 May 2023
EventThe Optical Fiber Communications Conference And Exhibition - OFC 2023 - San Diego, United States
Duration: 5 Mar 20239 Mar 2023

Publication series

Name2023 Optical Fiber Communications Conference and Exhibition, OFC 2023 - Proceedings


ConferenceThe Optical Fiber Communications Conference And Exhibition - OFC 2023
Country/TerritoryUnited States
CitySan Diego

Bibliographical note

Funding Information:
The authors like to thank Adva providing FSP3000 TeraFlex equipment. The study is funded in part by the UK EPSRC project: NDFF (No. S028854).

Publisher Copyright:
© 2023 The Author(s).


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