Explanipedia

Optical Communications and Networks Open

Mathieu Chagnon, D.C.C. Lam, Itsuro Morita · 2024

Optical Communications and Networks Open

Mathieu Chagnon, Cedric F. Lam, Itsuro Morita · 2023

In the last issue of the Optical Communications and Networks Series in 2023, we have selected six fascinating articles reporting on recent advances in optical communications and networking. They address “Digital Twins” for optical networks…

Series Editorial: Optical Communications and Networks Open

Mathieu Chagnon, Itsuro Morita · 2023

In the first issue of the Optical Communications and Networks Series in 2023, we have selected six fascinating articles reporting on recent advances in optical communications and networking. They address free-space optical (FSO) communicat…

Series Editorial: Optical Communications and Networks Open

Mathieu Chagnon, Itsuro Morita · 2022

In the third issue of the Optical Communications and Networks Series in 2022, we have selected three intriguing articles reporting on recent advances in optical communications and networking.

Series Editorial: Optical Communications and Networks Open

Mathieu Chagnon, Itsuro Morita · 2022

In the second issue of the Optical Communications and Networks Series in 2022, we have selected two articles that present recent advances in optical communications and networking. These advances and innovations are aimed at making the opti…

Dynamic Reconfiguration of WDM Virtual Network Topology over SDM Networks for Spatial Channel Failure Recovery with gRPC Telemetry Open

Raül Muñoz, Carlos Manso, F. Balasis, Ramon Casellas, Ricard Vilalta , et al. · 2022

We experimentally demonstrate the dynamic reconfiguration of WDM VNTs in response to SDM spatial channel failures. We present an SDN control architecture with gRPC-telemetry and analytics to detect failures and restore failed virtual WDM l…

Trans-Pacific class transmission over a standard cladding ultralow-loss 4-core fiber Open

Daiki Soma, Shohei Beppu, Yuta Wakayama, Seiya Sumita, Hidenori Takahashi , et al. · 2022

The total capacity of optical submarine cable systems as a global communication infrastructure must be continuously enlarged. Multi-core fibers (MCFs) have been studied as methods to maximize the total cable capacity under electrical power…

Series Editorial: Optical Communications and Networks Open

Mathieu Chagnon, Itsuro Morita · 2022

In the first issue of the Optical Communications and Networks Series in 2022, we have selected three articles that present recent advances in optical communications and networking. These advances and innovations are aimed at realizing high…

Scalability analysis of machine learning QoT estimators for a cloud-native SDN controller on a WDM over SDM network Open

Carlos Manso, Ricard Vilalta, Raül Muñoz, N. Yoshikane, Ramon Casellas , et al. · 2022

Maintaining a good quality of transmission (QoT) in optical transport networks is key to maintaining the service level agreement between the user and the service provider. QoT prediction techniques have been used to assure the quality of n…

Long-Haul Coupled 4-Core Fiber Transmission Over 7,200 Km With Real-Time MIMO DSP Open

Shohei Beppu, Masahiro Kikuta, Koji Igarashi, Hiroshi MUKAI, M. Shigihara , et al. · 2022

In this work, we present an experimental demonstration of real-time transoceanic space-division multiplexed transmission with coupled-core multicore fibers.To compensate for modal coupling in the coupled-core multicore fibers, we implement…

SDN Control Architectures for WDM over SDM (WDMoSDM) Networks Open

Raül Muñoz, N. Yoshikane, Carlos Manso, Ramon Casellas, Ricard Vilalta , et al. · 2021

We provide an overview of SDN control architectures for WDM over SDM (WDMoSDM) optical networks. We address dynamic management of end-to-end connectivity services and WDM virtual network topologies (VNTs) for partially disaggregated multi-…

First Demonstration of Dynamic Deployment of SDN-enabled WDM Virtual Network Topologies (VNTs) over SDM networks Open

Carlos Manso, Raül Muñoz, Filippos Balasis, Ramon Casellas, Ricard Vilalta , et al. · 2021

We present the dynamic deployment of logical WDM VNTs by deploying virtual links between ROADM/OXC nodes using spatial channels provided by SDM networks. We propose a cloud-native WDM over SDM (WDMoSDM) SDN orchestrator that is responsible…

50.47-Tbit/s Standard Cladding Coupled 4-Core Fiber Transmission Over 9,150 km Open

Daiki Soma, Shohei Beppu, Yuta Wakayama, Seiya Sumita, Hidenori Takahashi , et al. · 2021

Since optical submarine cable systems are a part of the global communications infrastructure, their total capacity must be continuously and dramatically enlarged. Recently, methods how to maximize the transmission capacity under electrical…

First Scalable Machine Learning Based Architecture for Cloud-native Transport SDN Controller Open

Carlos Manso, Noboru Yoshikane, Ricard Vilalta, Raül Muñoz, Ramon Casellas , et al. · 2021

We present a cloud-native architecture with a machine learning QoT predictor that enables cognitive functions in transport SDN controllers. We evaluate the QoT predictor training and auto-scaling capabilities in a real WDM/SDM testbed.

Experimental evaluation of control and monitoring protocols for optical SDN networks and equipment [Invited Tutorial] Open

Ricard Vilalta, Carlos Manso, Noboru Yoshikane, Ramon Casellas, Ricardo Martínez , et al. · 2021

This paper presents an experimental evaluation of network protocols for control and management of optical networks and optical network equipment as seen in current trends. This paper presents the YANG data modeling language and its associa…

Telemetry-enabled Cloud-native Transport SDN Controller for Real-time Monitoring of Optical Transponders Using gNMI Open

Ricard Vilalta, Carlos Manso, N. Yoshikane, Raül Muñoz, Ramon Casellas , et al. · 2020

This paper presents novel extensions for Cloud-native SDN controller for partially disaggregated optical networks that allow real-time monitoring of optical transponders. New SDN controller components are presented, as well as overall arch…

Controlling and Monitoring Optical Network Equipment in Optical SDN Networks Open

Ricard Vilalta, N. Yoshikane, Ramon Casellas, Ricardo Martínez, Takehiro Tsuritani , et al. · 2020

This paper presents an overview of current trends in network protocols for control and management of optical networks and optical network equipment. The paper explores the usage of these protocols in open source optical networking projects.

TAPI-enabled SDN control for partially disaggregated multi-domain (OLS) and multi-layer (WDM over SDM) optical networks [Invited] Open

Carlos Manso, Raül Muñoz, Noboru Yoshikane, Ramon Casellas, Ricard Vilalta , et al. · 2020

Network operators are facing a critical issue on their optical transport networks to deploy 5G and Internet of Things services. They need to address the capacity increase by a factor of 10, while keeping a similar cost per user. Over the…

Weakly coupled 10-mode-division multiplexed transmission over 48-km few-mode fibers with real-time coherent MIMO receivers Open

Shohei Beppu, Koji Igarashi, Masahiro Kikuta, Daiki Soma, T. Nagai , et al. · 2020

For weakly coupled mode-division multiplexed (MDM) transmission systems, we design and implement optical coherent receiver prototypes with real-time multiple-input multiple-output (MIMO) digital signal processing to equalize two degenerate…

Network control and orchestration in SDM and WDM optical networks Open

Raül Muñoz, Noboru Yoshikane, Ricard Vilalta, Ramon Casellas, Ricardo Martínez , et al. · 2020

We present the first SDN-enabled multi-domain multi-layer (WDM/SDM) control architecture for partially disaggregated optical networks with multiple WDM and SDM OLS domains and transponders to provision end-to-end TAPI connectivity services…

Adaptive software defined networking control of space division multiplexing super-channels exploiting the spatial-mode dimension Open

Raül Muñoz, Noboru Yoshikane, Ricard Vilalta, Josep M. Fàbrega, Laura Rodríguez‐Navas , et al. · 2019

Space division multiplexing (SDM) super-channels are the only way to guarantee a sustainable scaling of the optical line interface rate. High-capacity terabit interfaces can be deployed by logically associating several optical sub-channels…

GRPC-BASED SDN CONTROL AND TELEMETRY FOR SOFT-FAILURE DETECTION OF SPECTRAL/SPACIAL SUPERCHANNELS Open

Ricard Vilalta, Noboru Yoshikane, Ramon Casellas, Ricardo Martínez, Shohei Beppu , et al. · 2019

This paper presents the first experimental demonstration of gRPC-based SDN control and telemetry architecture for spectral/spatial super-channels with SDM/WDM transceivers that monitor the BER to detect soft-failures over an 11-km 6- mode …

SDN/NFV Control and Orchestration for SDM Networks Open

Raül Muñoz, Ricard Vilalta, Josep M. Fàbrega, Ramon Casellas, Ricardo Martínez , et al. · 2019

We present an SDM network and node architecture based on sliceable spatial-mode, spatial-core and spectral transceivers, and a centralized SDN controller with NETCONF and TAPI for the management of SDM super-channels by multiple NFVorchest…

Orchestration of Optical Networks and Cloud/Edge Computing for IoT Services Open

Raül Muñoz, Ricard Vilalta, Ramon Casellas, Ricardo Martínez, Noboru Yoshikane , et al. · 2019

We present an IoT-aware cloud and network orchestration architecture for multi-domain transport SDN networks and cloud/edge computing that deploys an IoT-traffic control and congestion avoidance mechanism for dynamic distribution of IoT an…

SDN-enabled Scaling up/down of SDM Super-Channels Exploiting Spatial Modes with Adaptive MIMO Equalization and Modulation Format Assignment Open

Raül Muñoz, N. Yoshikane, Josep M. Fàbrega, Laura Rodríguez‐Navas, Ricard Vilalta , et al. · 2019

Space division multiplexing (SDM) is the next dimension to increase the capacity of the optical transmission systems beyond WDM. SDM takes advantage of the spatial degrees of freedom in the fiber to transmit multiple optical channels in pa…

SDN Control of Sliceable Multi-dimensional (Spectral and Spatial) Transceivers with YANG/NETCONF Open

Raül Muñoz, N. Yoshikane, Ricard Vilalta, Josep M. Fàbrega, Laura Rodríguez‐Navas , et al. · 2019

The combination of Spatial Division Multiplexing (SDM) with flexi-grid WDM enables optical transceivers to provide super-channels exploiting both spectral and spatial dimensions. In this paper we extend the SDM-WDM transceivers to support …

SDN Control and Monitoring System for Soft-Failure Detection and Optical Restoration of Spectral/Spatial Superchannels Open

Raül Muñoz, Noboru Yoshikane, Josep M. Fàbrega, Ricard Vilalta, Laura Rodríguez‐Navas , et al. · 2018

<p>First experimental demonstration of an SDN monitoring and restoration architecture for spectral/spatial superchannels with SDM/WDM transceivers that monitor the BER/OSNR to detect soft failures and restore the degraded channels by…

SDN control and monitoring of SDM/WDM and packet transport networks for 5G fronthaul/backhaul Open

Raül Muñoz, Josep M. Fàbrega, Ricard Vilalta, Michela Svaluto Moreolo, Ricardo Martínez , et al. · 2018

This paper presents optical (SDM/WDM) and packet transport solutions for 5G fronthaul/backhaul and the hierarchical Transport SDN control and monitoring architecture. It dynamically provides multiple spectral-spatial super-channels and pac…

SDN Control and Monitoring of SDM/WDM and Packet Transport Networks for 5G Fronthaul/Backhaul Open

Raül Muñoz, Josep M. Fàbrega, Ricard Vilalta, Michela Svaluto Moreolo, Ricardo Martínez , et al. · 2018

This paper presents optical (SDM/WDM) and packet transport solutions for 5G fronthaul/backhaul and the hierarchical Transport SDN control and monitoring architecture. It dynamically provides multiple spectral-spatial super-channels and pac…

Sdn-Enabled Sliceable Multi-Dimensional (Spectral And Spatial) Transceiver Controlled With Yang/Netconf Open

Raül Muñoz, Ramon Casellas, Josep M. Fàbrega, Ricard Vilalta, Michela Svaluto Moreolo , et al. · 2018

We demonstrate the first SDN-enabled sliceable SDM-WDM transceiver providing multiple spectral-spatial super-channels spanning different cores and modes over a 11-km 6-mode 19-core fiber. We define an open API based on YANG/NETCONF for dis…

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