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Optical Engineering

Quick survivable algorithm with shared-risk link groups in backup-shared restorable optical networks
Author(s): Lei Guo; Lemin Li; Jin Cao; Hongfang Yu
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Paper Abstract

We propose a novel survivable algorithm, called backup-shared with trap avoidance (BSTA), to protect against single failure with shared-risk link groups (SRLGs) in wavelength-division multiplexing optical networks. In BSTA, each connection request will be assigned one primary path and one SRLG-disjoint backup, or one primary path and two SRLG-disjoint segment-backup paths. In contrast with previous algorithms, BSTA not only can effectively avoid the trap problem, but also can obtain better resource utilization ratio and lower blocking probability. Simulation results are shown to be promising.

Paper Details

Date Published: 1 April 2007
PDF: 5 pages
Opt. Eng. 46(4) 045004 doi: 10.1117/1.2720817
Published in: Optical Engineering Volume 46, Issue 4
Show Author Affiliations
Lei Guo, Northeastern Univ. (China)
Lemin Li, Univ. of Electronic Science and Technology of China (China)
Jin Cao, Univ. of Electronic Science and Technology of China (China)
Hongfang Yu, Univ. of Electronic Science and Technology of China (China)


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