Synergy of Photonic Technologies and Software-Defined Networking in the Hyperconnectivity Era

Moreolo, Michela Svaluto; Fàbrega, Josep M.; Nadal, Laia; Martínez, Ricardo; Casellas, Ramon

doi:10.1109/jlt.2019.2918958

Cited by 30 publications

(49 citation statements)

References 26 publications

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“…General architecture of the S-BVT is depicted in Figure 1. It is worth noting the modular scheme, based on multiple BVT modules, which ease the grow/pay-as-needed approach, facilitating optical network disaggregation and fostering interoperability [9,19]. When photonic integration is considered, the fundamental/basic module can include multiple BVT front-end modules, which can be activated in a license-based fashion.…”

Section: S-bvt Architecture: Design and Optionsmentioning

confidence: 99%

“…the bandwidth occupancy) and optical carrier (operating wavelength) to be occupied, the target rate or FEC is selected, etc. [7,9,19].…”

Section: S-bvt Architecture: Design and Optionsmentioning

confidence: 99%

“…The fundamental S-BVT elements can be selected according to their cost/complexity and expected performance, identifying different flexibility level and requirements, as summarized in Table 1. In Reference [7] and [19], more exhaustive descriptions and discussions on the S-BVT elements and characteristics reported in Table 1 are provided.…”

Section: Performance and Programmabilitymentioning

confidence: 99%

“…Tailored solutions must be envisioned to address the high demand of dynamicity and capacity, while coping with the stringent cost and energy requirements. Accordingly, the role of mature and novel photonic technologies, as well as dense photonic integration able to reduce costs, power consumption, and footprint, is particularly important for the actual and optimal design of transceiver architecture [18,19].The purpose of this work is to review and analyze alternative S-BVT design architecture options targeting different network segments and applications, also including programmability aspects. We specifically focus on S-BVT architecture based on MCM, which provide a wide range of granularity.…”

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confidence: 99%

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confidence: 99%

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Sliceable BVT Evolution Towards Programmable Multi-Tb/s Networking

2019

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The sliceable bandwidth variable transceiver (S-BVT) is a key element in addressing the challenges and evolution of optical networks, and supporting the ever-increasing traffic volume, speed, and dynamicity driven by novel and broadband services and applications. Multiple designs and configurations are possible and are evolving towards supporting multi-Tb/s networking, thanks to the adoption of advanced and more mature photonic technologies. In this work, we review and analyze alternative S-BVT design architecture options that target different network segments and applications. We specifically focus on S-BVTs based on multicarrier modulation (MCM), which provide a wide range of granularity and more flexible spectral manipulation. A detailed description of the main elements in an S-BVT and their characteristics is provided in order to give design guidelines. The performance in a real testbed network is also reported, comparing a set of S-BVT configurations that adopt different technologies. Finally, an extensive discussion of the described architecture, functionalities, and results, including programmability aspects, is provided in view of S-BVT evolution towards future optical network requirements and needs.

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Section: S-bvt Architecture: Design and Optionsmentioning

confidence: 99%

“…the bandwidth occupancy) and optical carrier (operating wavelength) to be occupied, the target rate or FEC is selected, etc. [7,9,19].…”

Section: S-bvt Architecture: Design and Optionsmentioning

confidence: 99%

Section: Performance and Programmabilitymentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Sliceable BVT Evolution Towards Programmable Multi-Tb/s Networking

2019

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Experimental Evaluation of RSA Algorithms for SDN-Programmable VCSEL-Based S-BVT in High-Capacity and Cost-Efficient Optical Metro Networks

Martínez

Casellas

Moreolo

et al. 2021

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Future metro networks need to increase the transport capacity and improve the cost-and power-efficiency. These challenges are tackled by the EU-H2020 PASSION project exploiting dense photonic integration and cost-efficient optical technologies. Specifically, PASSION investigates a) modular sliceable bandwidth variable transceivers (S-BVTs) built upòn a set of both vertical cavity surface emitting lasers (VCSEL) and Coherent Receivers (CO-Rx); and b) hierarchical switching nodes in a flexigrid network. An SDN controller handles the network programmability where a key functionality is the path computation and resource selection to fulfil the connection requirements. This is conducted by the Routing and Spectrum Assignment (RSA) algorithms. The considered S-BVT transmitter imposes that each S-BVT VCSEL reaches up to 50 Gb/s. Thus, connections requesting higher bandwidth (e.g., 200 Gb/s) are accommodated over several optical flows. In this context, two RSA algorithms called co-routed (RSA-CR) and inversed multiplexed (RSA-IM) optical flows are proposed and compared. The RSA-CR enforces that all the connection's optical flows are routed over the same spatial path; the RSA-IM relaxes this allowing the optical flows being set up over different spatial routes. The experimental evaluation, made upon dynamic traffic, aims at comparing both RSA algorithms performance according to the blocked bandwidth ratio, the average used of S-BVT devices, and the average setup time.

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