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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 2 — Jan. 28, 2013
  • pp: 1496–1511

Multi-link faults localization and restoration based on fuzzy fault set for dynamic optical networks

Yongli Zhao, Xin Li, Huadong Li, Xinbo Wang, Jie Zhang, and Shanguo Huang  »View Author Affiliations

Optics Express, Vol. 21, Issue 2, pp. 1496-1511 (2013)

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Based on a distributed method of bit-error-rate (BER) monitoring, a novel multi-link faults restoration algorithm is proposed for dynamic optical networks. The concept of fuzzy fault set (FFS) is first introduced for multi-link faults localization, which includes all possible optical equipment or fiber links with a membership describing the possibility of faults. Such a set is characterized by a membership function which assigns each object a grade of membership ranging from zero to one. OSPF protocol extension is designed for the BER information flooding in the network. The BER information can be correlated to link faults through FFS. Based on the BER information and FFS, multi-link faults localization mechanism and restoration algorithm are implemented and experimentally demonstrated on a GMPLS enabled optical network testbed with 40 wavelengths in each fiber link. Experimental results show that the novel localization mechanism has better performance compared with the extended limited perimeter vector matching (LVM) protocol and the restoration algorithm can improve the restoration success rate under multi-link faults scenario.

© 2013 OSA

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 19, 2012
Revised Manuscript: December 20, 2012
Manuscript Accepted: December 21, 2012
Published: January 14, 2013

Yongli Zhao, Xin Li, Huadong Li, Xinbo Wang, Jie Zhang, and Shanguo Huang, "Multi-link faults localization and restoration based on fuzzy fault set for dynamic optical networks," Opt. Express 21, 1496-1511 (2013)

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