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IEICE TRANSACTIONS on Electronics

Dynamic Subwavelength Protection Using High-Speed Optical Switches for Optical Metro Networks

Masahiro NAKAGAWA, Kyota HATTORI, Toshiya MATSUDA, Masaru KATAYAMA, Katsutoshi KODA

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Summary :

Flexible resource utilization in terms of adaptive use of optical bandwidth with agile reconfigurability is key for future metro networks. To address this issue, we focus on optical subwavelength switched network architectures that leverage high-speed optical switching technologies and can accommodate dynamic traffic cost-effectively. Although optical subwavelength switched networks have been attracting attention, most conventional studies apply static (pre-planned) protection scenarios in the networks of limited sizes. In this paper, we discuss optical switch requirements, the use of transceivers, and protection schemes to cost-effectively create large-scale reliable metro networks. We also propose a cost-effective adaptive protection scheme appropriate for optical subwavelength switched networks using our fast time-slot allocation algorithm. The proposed scheme periodically re-optimizes the bandwidth of both working and protection paths to prevent bandwidth resources from being wasted. The numerical examples verify the feasibility of our proposed scheme and the impact on network resources.

Publication
IEICE TRANSACTIONS on Electronics Vol.E99-C No.2 pp.203-211
Publication Date
2016/02/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E99.C.203
Type of Manuscript
Special Section PAPER (Special Section on Recent Advances in Photonics Technologies and Their Applications)
Category

Authors

Masahiro NAKAGAWA
  NTT Corporation
Kyota HATTORI
  NTT Corporation
Toshiya MATSUDA
  NTT Corporation
Masaru KATAYAMA
  NTT Corporation
Katsutoshi KODA
  NTT Corporation

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