Analysis of filterless wavelength converters employing cross-gain modulation in semiconductor optical amplifiers

Tzanakaki, Anna; O'Mahony, MJ

doi:10.1109/cleo.1999.834410

Cited by 2 publications

(3 citation statements)

References 5 publications

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“…At the expense of a reduction in the spectral efficiency performance, filterless solutions hold the promise to provide enormous CAPEX reduction. [20] can be considered one of the first works to explore filterless nodes, in which authors evaluate the trade-off between the cost benefits and the performance losses due to lower signal-to-noise ratios. Furthermore, in [21], filterless architectures are evaluated as a solution to be applied in optical white-boxes based on optical coupler/combiner devices.…”

Section: B Filterless Versus Filtered Nodesmentioning

confidence: 99%

“…Filterless optical switching architectures have been presented and analyzed in seminal works like [20] or [21]. The idea behind its philosophy, is removing expensive optical filtering capabilities in the express degrees of ROADMs, to have a more cost-effective solution, at the expense of wasting spectrum.…”

Section: A Filterless Vs Roadm Optical Switching Architecturesmentioning

confidence: 99%

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Techno-Economic Impact of Filterless Data Plane and Agile Control Plane in the 5G Optical Metro

Pavón‐Mariño

Moreno-Muro

Garrich

et al. 2020

J. Lightwave Technol.

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Optical metro networks evolution driven by 5G requirements face enormous challenges. Network functions virtualized in the data centers spread to the metro nodes, IP, and optical technologies must cooperate to meet the metro traffic aggregation role. Multiple technological options exist, and carriers confront the need to economically assess them, benchmarked in realistic deployments. This paper gives relevant insights to this aim. We first construct a set of metro network benchmarks. A strategic and distinctive effort is made to incorporate metro WDM topologies, traffic profiles and daily variation patterns, fault-tolerance requisites, and network operational choices, that faithfully reflect the expected 5G metro progression for a national carrier. Then, we use these networks to assess two technological choices. On one hand, the cost-effectiveness limits in terms of CAPEX reductions and energy efficiency brought from the possibility of having an agile control plane in the metro, capable of on-demand instantiation of IT and network resources. On the other hand, we investigate the benefits of replacing ROADMs by more cost-effective filterless technologies, but just limiting this replacement to degree-1 and degree-2 optical nodes, that are prevalent (e.g. >50%) in regional metro topologies. A novel capacity planning algorithm has been developed for IT, IP and optical resources allocation and dimensioning, providing fault-tolerant designs for the realistic scenarios defined. Simulation results have been obtained using the Net2Plan NIW (NFV over IP over WDM) open-source framework. Developed algorithms and part of the testing scenarios are available for inspection in public repositories of the EU METRO-HAUL project, the umbrella for our work. Our results show CAPEX benefits in the order of 10% and energy savings in the order of 20-30% stemming from the on-demand resource allocation in the metro. In addition, degree 1 and degree 2 optical nodes have shown to be a sweet spot for applying filterless switching, with mitigated impact of the associated spectrum waste.

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Section: B Filterless Versus Filtered Nodesmentioning

confidence: 99%

Section: A Filterless Vs Roadm Optical Switching Architecturesmentioning

confidence: 99%

Techno-Economic Impact of Filterless Data Plane and Agile Control Plane in the 5G Optical Metro

Pavón‐Mariño

Moreno-Muro

Garrich

et al. 2020

J. Lightwave Technol.

View full text Add to dashboard Cite

show abstract

“…Tzanakaki et al [5] was one of the pioneers to investigate the filterless network components. The basic design principle of filterless optical networks was described by Savoie et al [6] in the early work on filterless optical networks with a motivation for cost reduction and environment friendly networks.…”

Section: Introductionmentioning

confidence: 99%

Dantzig–Wolfe decomposition for the design of filterless optical networks

Jaumard¹,

Wang²,

Coudert

2021

J. Opt. Commun. Netw.

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Filterless optical networks use passive splitters and combiners with coherent optics, providing wavelength selection in the digital domain, while forming a passive fiber-tree topology between nodes. In this study, we investigate the optimal design of filterless optical networks while minimizing the number of required wavelengths.We propose a Dantzig-Wolfe decomposition model in which each subproblem aims to generate a potential filterless optical subnetwork, with a directed tree topology. The master problem then selects the best combination of subnetworks.Numerical experiments demonstrate significant performance improvement over previous work, reducing previous computational results by a factor of 2 to 10 depending on the size of the data instances.

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Analysis of filterless wavelength converters employing cross-gain modulation in semiconductor optical amplifiers

Cited by 2 publications

References 5 publications

Techno-Economic Impact of Filterless Data Plane and Agile Control Plane in the 5G Optical Metro

Techno-Economic Impact of Filterless Data Plane and Agile Control Plane in the 5G Optical Metro

Dantzig–Wolfe decomposition for the design of filterless optical networks

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