Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12808
Title: Protection schemes with waveband grooming in fault-tolerant multidomain optical networks
Authors: Guo, L
Cao, J 
Wang, X
Jiang, D
Yang, T
Keywords: Fault-tolerance
Multi-domain
Optical networks
Protection
Waveband grooming
Issue Date: 2010
Publisher: SPIE-International Society for Optical Engineering
Source: Optical engineering, 2010, v. 49, no. 4, 045002 How to cite?
Journal: Optical engineering 
Abstract: In wavelength-division-multiplexing networks, the fault-tolerance is very important since failures may lead to a significant amount of data loss. At the same time, the waveband switching technique is very interesting since it can save switching ports in optical cross-connections. In addition, the hierarchical routing in multidomain optical networks is very challenging since the interdomain routing is based on aggregative virtual topology. However, previous works did not jointly consider the three issues. We propose two schemes, segment-based protection (SBP) and path-based protection (PBP), to provide the fault-tolerance and waveband grooming in multidomain optical networks. In SBP, for each connection we first compute an interdomain loose route based on virtual topology, and then we compute the intradomain exact path-pairs in each single domain traversed by the loose route based on physical topology. In PBP, for each connection we first compute an interdomain loose primary path and an interdomain loose backup path based on virtual topology, and then we compute the intradomain exact paths in each single domain traversed by the loose primary path and backup path based on the physical topology. To support multidomain waveband grooming, we present the layered auxiliary graph. Simulation results show that PBP performs better than SBP.
URI: http://hdl.handle.net/10397/12808
ISSN: 0091-3286
EISSN: 1560-2303
DOI: 10.1117/1.3381182
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