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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 6, Iss. 3 — Mar. 1, 2014
  • pp: 326–339

Multi-objective Design of Survivable Flexible-Grid DWDM Networks

António Eira, João Santos, João Pedro, and João Pires  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 6, Issue 3, pp. 326-339 (2014)
http://dx.doi.org/10.1364/JOCN.6.000326


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Abstract

Emerging trends in optical transport networks aiming to support increasing data rates are reshaping the possibilities for network planning. The deployment of a flexible grid with multiple available channel bit rates and spectral widths gives way to a more clearly defined trade-off between spectrum and cost in the planning process. Furthermore, providing redundancy in these types of services is both crucial and costly. For this reason, it is important to consider all these aspects simultaneously in order to have an accurate view of the cost/spectrum trade-off in the optical backbone. This paper presents an evolutionary based multi-objective framework for optimizing network deployments with flexible-grid channel formats ranging from 40 to 400 Gbits / s with varying degrees of resilience to both link and transponder failures. The multi-objective algorithm can consider all these different aspects simultaneously and highlight the degree to which cost can be traded for spectrum, and how the protection/restoration schemes influence both parameters. After benchmarking the proposed algorithm on both objectives, we use it on two reference networks to trace the non-dominated front for multiple resilience schemes, offering different levels of protection against link and/or transponder failures. We also evaluate how the channel format selection for each demand evolves when considering single-rate or bit-rate variable transponders.

© 2014 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(060.4257) Fiber optics and optical communications : Networks, network survivability
(060.4261) Fiber optics and optical communications : Networks, protection and restoration
(060.4265) Fiber optics and optical communications : Networks, wavelength routing

ToC Category:
Research Papers

History
Original Manuscript: August 22, 2013
Revised Manuscript: December 22, 2013
Manuscript Accepted: January 20, 2014
Published: February 24, 2014

Citation
António Eira, João Santos, João Pedro, and João Pires, "Multi-objective Design of Survivable Flexible-Grid DWDM Networks," J. Opt. Commun. Netw. 6, 326-339 (2014)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-6-3-326

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