Showing papers by "Esther Le Rouzic published in 2022"
01 Mar 2022
TL;DR: In this article , the performance of Nyquist subcarriers flexible transponders up to 800 Gbit/s over a 20x 80-km optical link operated at full WDM spectral load was evaluated.
Abstract: We test the performance of Nyquist subcarriers flexible transponders up to 800 Gbit/s over a 20x 80-km optical link operated at full WDM spectral load, obtaining excellent accuracy in GSNR and optimal power predictions using GNPy. © 2022 The Author(s)
5 citations
TL;DR: It is shown that current works in the communities of open source, open initiatives, and standardization bodies are addressing all these steps, and in this respect can accelerate the deployment of automation solutions in current and future optical transport networks.
Abstract: Network automation is the current challenge that operators face to accelerate end-to-end service delivery and improve network operations in the context of rapidly growing capacity needs. Optical networks have long been built using vendors’ turn-key solutions, resulting in complexity for the operator to automate its multi-vendor networks in a consistent way. Questioning the vendors’ lock-in in disaggregating the optical transmission systems (i.e., splitting the system into parts, where each part can be provided by a different vendor) provides advantages (e.g., cost) but also additional complexity. Openness and standardization appear as key for these multi-vendor scenarios. The path is not easy, but it is not a matter of choice: opening and interoperability are obligations that we face because of the need for automation. The journey that we detail in this paper is the one that we think will be sustainable from our side. The opposite, i.e., continue building vendors’ silos and staking per-vendor specialized applications, is not sustainable. We propose a step-by-step approach, starting with the non-disaggregated situation, followed by partial and full disaggregation architectures to the last evolution towards data centric networking. We present and discuss implementations that Orange has been contributing to and identify some gaps the industry should address. We show that current works in the communities of open source, open initiatives, and standardization bodies are addressing all these steps, and in this respect can accelerate the deployment of automation solutions in current and future optical transport networks.
2 citations
Proceedings Article•
18 Sep 2022
TL;DR: The GNPy project as discussed by the authors is an open source project for simulating physical impairments in contemporary DWDM networks, where the authors describe the unique interaction among network operators, equipment vendors and standard bodies, as well as challenges in implementing the digital twin of an optical network.
Abstract: We discuss the history, past challenges and future plans of GNPy, an open source project for simulating physical impairments in contemporary DWDM network. The paper describes the unique interaction among network operators, equipment vendors, and standard bodies, as well as challenges in implementing the digital twin of an optical network.
1 citations
05 Nov 2022
TL;DR: In this paper , the independent cross-channel NLI components in WDM flex-grid flex-rate multi-vendor comb at symbol rate up to 90 Gbaud propagating on a multi-span amplified line were compared to the GNPy prediction.
Abstract: We experimentally measure the independent cross-channel NLI components in WDM flex-grid flex-rate multi-vendor comb at symbol rate up to 90 Gbaud propagating on a multi-span amplified line and compare the results to the GNPy prediction.