Abstract

Terabit elastic optical networking (EON) is foreseen as a viable solution to extend the lifetime of a network exploiting the available bandwidth in previously deployed optical fibers. EON is based on bandwidth-variable transponders capable of supporting multiple bit rates and/or modulation formats according to traffic requirements and node architectures that route arbitrary channel bandwidths. Thus, EON increases the heterogeneity of the network, which may create the need for autonomic adaptive and/or cognitive techniques. In this context, the software-defined networking (SDN) paradigm emerges as an opportunity to enable such techniques thanks to the centralized view of the network by decoupling the control plane and the data plane. This paper surveys different activities carried out at the Optical Technologies Division in Centro de Pesquisa e Desenvolvimento em Telecomunicações, Brazil. We review an optical transport SDN controller for virtual optical networks that supports two adaptive algorithms. First, the autonomic flexible transponder reconfigures the transmission modulation format according to a threshold level. Second, the adaptive global spectrum equalization reconfigures the wavelengths’ attenuation profiles applied at the optical nodes to improve the signals’ optical signal-to-noise ratio (OSNR) at reception. Finally, we report experimental results of an in-band OSNR monitor for advanced modulation formats.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Multilayer Network Analytics With SDN-Based Monitoring Framework

Shuangyi Yan, Alejandro Aguado, Yanni Ou, Rui Wang, Reza Nejabati, and Dimitra Simeonidou
J. Opt. Commun. Netw. 9(2) A271-A279 (2017)

Control Plane Architectures for Elastic Optical Networks [Invited]

Víctor López, Rodrigo Jiménez, Óscar González de Dios, and Juan Pedro Fernández-Palacios
J. Opt. Commun. Netw. 10(2) A241-A249 (2018)

SDN Enabled Restoration With Triggered Precomputation in Elastic Optical Inter-Datacenter Networks

Yu Xiong, Yuanyuan Li, Bin Zhou, Ruyan Wang, and George N. Rouskas
J. Opt. Commun. Netw. 10(1) 24-34 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription