Path protection WDM networks with impaired-transmission

Path protection WDM networks with impaired-transmission In wavelength division multiplexing (WDM) networks, failures may imply severe loss of data due to the high transmission rates, leading to the need for employment of protective mechanisms. Transparency and switching in all-optical networks cause physical impairment, which can significantly degrade signal quality. If the signal quality along a path is below acceptable values, this path cannot be used for incoming requests in the establishment of lightpaths. Therefore, quality must be checked by the routing and wavelength assignment algorithm. The present article introduces two novel algorithms for shared path protection in WDM networks that take into consideration the Polarization Mode Dispersion, Amplifier Spontaneous Emission, and homowavelength cross-talk physical impairments during path selection. The efficiency of these algorithms is compared to that of their impairment-unaware counterparts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

Path protection WDM networks with impaired-transmission

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Publisher
Springer US
Copyright
Copyright © 2009 by Springer Science+Business Media, LLC
Subject
Computer Science; Characterization and Evaluation of Materials; Electrical Engineering; Computer Communication Networks
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-009-0226-6
Publisher site
See Article on Publisher Site

Abstract

In wavelength division multiplexing (WDM) networks, failures may imply severe loss of data due to the high transmission rates, leading to the need for employment of protective mechanisms. Transparency and switching in all-optical networks cause physical impairment, which can significantly degrade signal quality. If the signal quality along a path is below acceptable values, this path cannot be used for incoming requests in the establishment of lightpaths. Therefore, quality must be checked by the routing and wavelength assignment algorithm. The present article introduces two novel algorithms for shared path protection in WDM networks that take into consideration the Polarization Mode Dispersion, Amplifier Spontaneous Emission, and homowavelength cross-talk physical impairments during path selection. The efficiency of these algorithms is compared to that of their impairment-unaware counterparts.

Journal

Photonic Network CommunicationsSpringer Journals

Published: Dec 3, 2009

References

  • Impairment aware optimal diverse routing for survivable optical networks
    Wang, S.; Li, L.

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