Link Design and Legacy Amplifier Limitation in Flex-Grid Optical Networks

Amar, Djamel; Brochier, Nicolas; Rouzic, Esther Le; Augé, Jean-Luc; Lepers, Catherine; Cousin, Bernard; Kanj, Mohamad

doi:10.1109/jphot.2016.2527023

Cited by 1 publication

(3 citation statements)

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“…selection/configuration of optical amplifiers) is an important phase to determine optical resources limits over every optical link. To this end, we have developed a link design method, which we presented in [4][17] [18], taking advantage of the optimization strategy presented in [19]. Surely, any other design method could be used instead to determine these power resources.…”

Section: A Design Methodsmentioning

confidence: 99%

“…Our link design method developed in [17] [4], is based on an analytical formula that calculates amplifier gains while respecting optimal powers to be set at the input of optical spans, thus leading to link OSNR optimization. After this link design phase (or any other design phase), every link has its own set of amplifier types with various power and gain settings, which subsequently determines the power resource limits and the quality parameter of the link (i.e., OSNR).…”

Section: A Design Methodsmentioning

confidence: 99%

“…In this respect, we demonstrated in [4] that if we control the power of the optical channels, it is possible to keep the existing amplifiers when migrating to Flex-grid technology. Moreover, this power control allows 10% of cost reduction with respect to conventional Fixed-Grid, without mentioning the saved cost through avoiding the purchase and the deployment of new amplifiers and the service interruption of the optical links.…”

Section: Introductionmentioning

confidence: 99%

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Optical Power Control in GMPLS Control Plane

Kanj¹,

Rouzic²,

Meuric³

et al. 2016

J. Opt. Commun. Netw.

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International audienceThe exponential traffic growth in optical networks has triggered the evolution from Fixed-Grid to Flex-Grid technology. This evolution allows better spectral efficiency and spectrum usage over current optical networks in order to facilitate huge dynamic traffic demands. The promise of Flex-Grid technology in terms of increasing the number of optical channels established over optical links may however not be sustainable because of the associated increase in optical amplification power. In this work, we detail a power control process that takes advantage of link optical power and channel optical signal to noise ratio (OSNR) margins to allow network operators to support this optical power increase while maintaining the use of legacy optical amplifiers. New GMPLS protocol extensions are proposed to integrate the optical power control process in the control plane. The performance of the process is evaluated in terms of the blocking ratio and network throughput over Fixed-Grid and Flex-Grid networks. Results show that controlling optical power benefits from the Flex-Grid technology in terms of spectrum and capacity gain and reduces optical connection blocking

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Section: A Design Methodsmentioning

confidence: 99%

Section: A Design Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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