Novel Automatic Service Restoration Technique by Using Self-Reconfiguration of Network Resources for a Disaster-struck Metro-Access Network

Takuya Kanai, Yumiko Senoo, Kota Asaka, Jun Sugawa, Hideaki Tamai, Hiroyuki Saito, Naoki Minato, Atsushi Oguri, Seiya Sumita, Takehiro Sato, Nobuhiko Kikuchi, Shun Ichi Matsushita, Takehiro Tsuritani, Satoru Okamoto, Naoaki Yamanaka, Ken Ichi Suzuki, Akihiro Otaka

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

This paper shows the concept of the elastic lambda aggregation network (EλAN) that will achieve an elastic common access infrastructure for the metro-access network. It proposes a service restoration technique that uses optical path switching and intercentral office handover for EλAN to recover from disasters. The feasibility of the proposed service restoration technique is successfully demonstrated for the first time by using a prototype testbed of a metro-access network. By applying both orthogonal frequency division multiplexing and adaptive modulation, the system automatically changes the transmission parameters (modulation level, the number of subcarriers, and symbol rate) according to the service requirements and conditions of the optical distribution network, such as the link's end-to-end optical loss, in order to achieve accommodate multiple services. In the experiment, an optical network unit in a faulted system automatically reconnected within 10 s to another office 20-km away with the same throughput.

Original languageEnglish
Pages (from-to)1516-1523
Number of pages8
JournalJournal of Lightwave Technology
Volume36
Issue number8
DOIs
Publication statusPublished - 2018 Apr 15

Keywords

  • Adaptive modulation
  • elastic
  • metro-access network
  • optical access network
  • orthogonal frequency division multiplexing (OFDM)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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