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Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links

Kyeong Soo Kim, Nicholas Doran, Joseph Kim

European Transactions on Telecommunications, Volume: 21, Issue: 6, Pages: 563 - 566

Swansea University Authors: Nicholas Doran, Joseph Kim

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DOI (Published version): 10.1002/ett.1444

Abstract

Fiber overlay is a cost-effective technique to alleviate wavelength blocking in some links of a wavelength-routed optical network by increasing the number of wavelengths in those links. In this letter we investigate the effects of overlaying fiber in an all-optical network (AON) based on GÉANT2 topo...

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Published in: European Transactions on Telecommunications
Published: Wiley 2010
URI: https://cronfa.swan.ac.uk/Record/cronfa5991
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last_indexed 2018-02-09T04:32:56Z
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spelling 2014-03-28T17:25:23.3969014 v2 5991 2013-09-03 Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links 6fbb9a398061d20d3001297bee8bd022 Nicholas Doran Nicholas Doran true false 28df2d8e401d3e36b6da4a4124049742 Joseph Kim Joseph Kim true false 2013-09-03 Fiber overlay is a cost-effective technique to alleviate wavelength blocking in some links of a wavelength-routed optical network by increasing the number of wavelengths in those links. In this letter we investigate the effects of overlaying fiber in an all-optical network (AON) based on GÉANT2 topology. The constraint-based routing and wavelength assignment (CB-RWA) algorithm locates where cost-efficient upgrades should be implemented. Through numerical examples, we demonstrate that the network capacity improves by 25% by overlaying fiber on 10% of the links, and by 12% by providing hop reduction links comprising 2% of the links. For the upgraded network, we also show the impact of dynamic traffic allocation on the blocking probability. Journal Article European Transactions on Telecommunications 21 6 563 566 Wiley 31 10 2010 2010-10-31 10.1002/ett.1444 In the future all-optical network (AON), where optical wavelengths are directly routed in optical domain and therefore can propagate from sources to destinations over long distances and in high bit rates without optical-to-electronic conversion, wavelength blocking is a major performance issue. Fibre overlay is a cost-effective technique to alleviate the wavelength blocking in some links of a network by increasing the number of wavelengths in those specific links. In this letter, we investigated the effects of overlaying fibre in the AON based on GÉANT2 topology. The constraint-based routing and wavelength assignment (CB-RWA) algorithm locates where cost-efficient upgrades should be implemented. Through numerical examples, we demonstrated that the network capacity improves by 25 per cent by overlaying fibre on 10 per cent of the links, and by 12 per cent by providing hop reduction links comprising 2 per cent of the links. For the upgraded network, we also shown the impact of dynamic traffic allocation on the blocking probability.* Impact Factor: 0.448 COLLEGE NANME COLLEGE CODE Swansea University 2014-03-28T17:25:23.3969014 2013-09-03T06:33:27.0000000 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Kyeong Soo Kim 1 Nicholas Doran 2 Joseph Kim 3
title Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links
spellingShingle Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links
Nicholas Doran
Joseph Kim
title_short Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links
title_full Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links
title_fullStr Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links
title_full_unstemmed Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links
title_sort Cost-effective upgrade of WDM all-optical networks using overlay fibres and hop reduction links
author_id_str_mv 6fbb9a398061d20d3001297bee8bd022
28df2d8e401d3e36b6da4a4124049742
author_id_fullname_str_mv 6fbb9a398061d20d3001297bee8bd022_***_Nicholas Doran
28df2d8e401d3e36b6da4a4124049742_***_Joseph Kim
author Nicholas Doran
Joseph Kim
author2 Kyeong Soo Kim
Nicholas Doran
Joseph Kim
format Journal article
container_title European Transactions on Telecommunications
container_volume 21
container_issue 6
container_start_page 563
publishDate 2010
institution Swansea University
doi_str_mv 10.1002/ett.1444
publisher Wiley
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
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description Fiber overlay is a cost-effective technique to alleviate wavelength blocking in some links of a wavelength-routed optical network by increasing the number of wavelengths in those links. In this letter we investigate the effects of overlaying fiber in an all-optical network (AON) based on GÉANT2 topology. The constraint-based routing and wavelength assignment (CB-RWA) algorithm locates where cost-efficient upgrades should be implemented. Through numerical examples, we demonstrate that the network capacity improves by 25% by overlaying fiber on 10% of the links, and by 12% by providing hop reduction links comprising 2% of the links. For the upgraded network, we also show the impact of dynamic traffic allocation on the blocking probability.
published_date 2010-10-31T18:11:43Z
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score 11.04748

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