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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 5, Iss. 10 — Oct. 1, 2013
  • pp: A46–A56

Virtualization in Optical Networks from Network Level to Hardware Level [Invited]

Masahiko Jinno, Hidehiko Takara, Kazushige Yonenaga, and Akira Hirano  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 5, Issue 10, pp. A46-A56 (2013)
http://dx.doi.org/10.1364/JOCN.5.000A46


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Abstract

Elastic optical networking is attracting much attention as a promising solution to achieve spectrum-efficient transport of higher data rates at 100Gbits/s and beyond. If we draw an analogy to virtualization in cloud computing, it can be seen as network level resource virtualization of optical networks where spectrum resources in optical links are segmented as shareable resources and adaptively aggregated to create a wide variety of optical channels (OChs). In this paper, we discuss the benefits of introducing virtualization into the optical domain from the viewpoints of the network level and the hardware level. In elastic optical networks, a frequency slot through which an OCh is transported and the OCh itself are explicitly decoupled. While the adaptability in the frequency slot is brought about by bandwidth variable wavelength-selective switches, the adaptability in an OCh is yielded by digital coherent technology that is employed in transponders and regenerators. It is emphasized that in order to achieve transponders and regenerators that accommodate heterogeneous traffic demands in an economical manner, simply being adaptive is not enough, and being shareable is essential. We refer to this concept as hardware level virtualization. As examples, we describe a multiflow transponder and an elastic regenerator with results that show proof of concept. Based on the hardware virtualization concept, we propose an elastic optical transport system (EOTS) architecture that enables cost- and energy-efficient IP traffic offloading to the optical domain and improves programmability and automation of optical networks.

© 2013 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications
(060.1155) Fiber optics and optical communications : All-optical networks
(060.4265) Fiber optics and optical communications : Networks, wavelength routing

ToC Category:
OFC/NFOEC 2013

History
Original Manuscript: April 29, 2013
Revised Manuscript: June 23, 2013
Manuscript Accepted: June 27, 2013
Published: August 8, 2013

Citation
Masahiko Jinno, Hidehiko Takara, Kazushige Yonenaga, and Akira Hirano, "Virtualization in Optical Networks from Network Level to Hardware Level [Invited]," J. Opt. Commun. Netw. 5, A46-A56 (2013)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-5-10-A46

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