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Survivable elastic optical networks: survey and perspective (invited)

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Abstract

Elastic optical networks (EONs) have been receiving extensive attention because of their inherent flexibility and the efficiency with which they allocate fiber-bandwidth. For an EON, survivability is of crucial importance because of the very high bandwidth that it carries on each optical channel. In this article, we review the current state of the art of survivable EONs which reviews the literature to summarize the following aspects: (a) spectrum resource sharing among backup lightpaths, (b) sharing of high-speed optical transponders, (c) effect of spectrum conversion, (d) bandwidth squeezed restoration (BSR), (e) joint restoration by multiple sub-band optical channels, (f) multi-layer survivability, and (g) energy efficiency. Apart from a summary on the current research status, we also discuss open research issues which are important to survivable EONs from the perspectives of (a) impact of spectrum conversion, (b) impact of elastic optical transponder configuration, (c) impact of physical layer impairments and limitations, (d) protection-path-based spectrum defragmentation, and (e) network availability.

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Authors and Affiliations

  1. School of Electronic and Information Engineering, Soochow University, Suzhou, 215006, Jiangsu Province, People’s Republic of China

    Gangxiang Shen & Hong Guo

  2. Department of EEE, IIT Guwahati, Guwahati, 781039, India

    Sanjay K. Bose

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  1. Gangxiang Shen
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  2. Hong Guo
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  3. Sanjay K. Bose
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Correspondence to Gangxiang Shen.

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This work was jointly supported by National Natural Science Foundation of China (NSFC) (61322109, 61172057) and Natural Science Foundation of Jiangsu Province (BK20130003, BK2012179).

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Shen, G., Guo, H. & Bose, S.K. Survivable elastic optical networks: survey and perspective (invited). Photon Netw Commun 31, 71–87 (2016). https://doi.org/10.1007/s11107-015-0532-0

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