Realistic Approaches to Scaling the IP Network using Optics

Gerstel, Ori

doi:10.1364/ofc.2011.owp1

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…For a discussion of their data transmission rates see [2]. [3,4] suggest flex-grid DWDM as an alternative emerging architecture. The network implications of this new architecture are explained in detail in [5], which refers to the key enabling technologies for the flex-spectrum.…”

Section: Introductionmentioning

confidence: 99%

Profit Maximization in Flex-Grid All-Optical Networks

2019

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All-optical networks have been largely investigated due to their high data transmission rates. The key to the high speeds in alloptical networks is to maintain the signal in optical form, to avoid the overhead of conversion to and from electrical form at the intermediate nodes. In the traditional WDM technology the spectrum of light that can be transmitted through the optical fiber has been divided into frequency intervals of fixed width with a gap of unused frequencies between them. In this context the term wavelength refers to each of these predefined frequency intervals. An alternative architecture emerging in very recent studies is to move towards a flexible model in which the usable frequency intervals are of variable width. Every lightpath is assigned a frequency interval which remains fixed through all the links it traverses. Two different lightpaths using the same link have to be assigned disjoint sub-spectra. This technology is termed flex-grid or flex-spectrum. The introduction of this technology requires the generalization of many optimization problems that have been studied for the fixed-grid technology. Moreover it implies new problems that are irrelevant or trivial in the current technology. In this work we focus on bandwidth utilization in path toplogy and consider two wavelength assignment, or in graph theoretic terms coloring, problems where the goal is to maximize the total profit. We obtain bandwidth maximization as a special case.

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Section: Introductionmentioning

confidence: 99%

Profit Maximization in Flex-Grid All-Optical Networks

2019

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“…Bandwidth allocation is common in many network applications such as content distribution networks or mobile clients, which require bandwidth reservations to support hangovers for streaming video [1,2]. In particular our problem is motivated by the DWDM (dense wavelength division multiplexing) network [4,5,7]. In optical networks, high-speed signals are sent through optical fibers using WDM technology in which a signal transmitted from a source to a destination is given some wavelength.…”

Section: Introductionmentioning

confidence: 99%

Interval scheduling to maximize bandwidth provision

Shalom

Wong

Zaks

2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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“…As envisioned in projects more focused on Future Internet services like the ones currently pursued within the FI-PPP framework [16], these requirements can in fact be wildly different and thus deserve a highly adaptive transport layer. A cognitive optical network based on flexible-grid technologies will strengthen the link between the client (IP) and the transport (optical) layer [17] to an extreme degree thus providing a consistent contribution toward the EU vision of a future network infrastructure that support the convergence of heterogeneous broadband technologies as enablers of the Future Internet.…”

Section: Introductionmentioning

confidence: 99%

Next Generation Flexible and Cognitive Heterogeneous Optical Networks

Tomkos

Angelou

Barroso

et al. 2012

The Future Internet

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Abstract. Optical networking is the cornerstone of the Future Internet as it provides the physical infrastructure of the core backbone networks. Recent developments have enabled much better quality of service/experience for the end users, enabled through the much higher capacities that can be supported. Furthermore, optical networking developments facilitate the reduction of complexity of operations at the IP layer and therefore reduce the latency of the connections and the expenditures to deploy and operate the networks. New research directions in optical networking promise to further advance the capabilities of the Future Internet. In this book chapter, we highlight the latest activities of the optical networking community and in particular what has been the focus of EU funded research. The concepts of flexible and cognitive optical networks are introduced and their key expected benefits are highlighted. The overall framework envisioned for the future cognitive flexible optical networks are introduced and recent developments are presented.

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Realistic Approaches to Scaling the IP Network using Optics

Cited by 9 publications

References 5 publications

Profit Maximization in Flex-Grid All-Optical Networks

Profit Maximization in Flex-Grid All-Optical Networks

Interval scheduling to maximize bandwidth provision

Next Generation Flexible and Cognitive Heterogeneous Optical Networks

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