Spectrally-Spatially Flexible Optical Networking

Sharlati, Behnam; Mastropaolo, Antonia; Diamantopoulos, Nikolaos-Panteleimon; Rivas-Moscoso, Jose Manuel; Pederzolli, Federico; Siracusa, Domenico; Klonidis, Dimitrios; Tomkos, Ioannis

doi:10.1364/acpc.2016.as2d.1

Cited by 8 publications

(11 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the previous section we described an SCA approach that takes only inter-core crosstalk into consideration. In order to account for additional physical layer impairments that are present in the network as well (both linear and nonlinear effects), the Quality of Transmission (QoT) estimator tool presented in [6] is used to evaluate all paths allocated utilizing the aforementioned algorithm. The QoT estimator module predicts the QoT of new lightpaths to be established in the network as well as the impact on existing connections when setting up a new one, by taking into account the amplified spontaneous emission (ASE) noise and analytical models of linear and nonlinear impairments of SDM fibers.…”

Section: Feedback-based Process: Qot-aware Approachmentioning

confidence: 99%

“…Further, channels with 25 GHz spacing are utilized with a baud rate of 16 Gbaud. The BER threshold for rejecting a connection was set to 10 −3 as also described in [6]. Figure 8 presents the results of the proposed algorithm with all three sorting criteria using the QoT estimator tool, illustrating the advantage of utilizing the proposed hybrid approach.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…It is an undeniable fact that SDM technology integration in optical communications offers many benefits through the expansion of spectral resources. However, physical-layer impairments must also be considered when a core assignment is made for a specific connection [6]. Crosstalk effects must especially be taken into consideration as they can potential have detrimental impact on a number of the connections established in the network.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Physical Layer-Aware Routing, Spectrum, and Core Allocation in Spectrally-Spatially Flexible Optical Networks with Multicore Fibers

Savva

Ellinas

Shariati

et al. 2018

2018 IEEE International Conference on Communications (ICC)

Self Cite

View full text Add to dashboard Cite

In this work, efficient routing, spectrum, and core allocation (RSCA) techniques are proposed for spatial division multiplexed (SDM) elastic optical networks (EONs) utilizing multicore fibers (MCFs). These techniques provide efficient resource utilization with minimal computational complexity, while also taking into consideration physical layer effects. Initially, a crosstalk-aware approach is presented that accounts for the crosstalk effects in the network that can have detrimental impact on the connections established in the network. This approach is subsequently enhanced with a feedback-based procedure that takes into account all physical layer impairments, aiming to minimize the number of connections that cannot be established in the network due to quality-of-transmission (QoT) considerations.

show abstract

Section: Feedback-based Process: Qot-aware Approachmentioning

confidence: 99%

Section: Performance Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Physical Layer-Aware Routing, Spectrum, and Core Allocation in Spectrally-Spatially Flexible Optical Networks with Multicore Fibers

Savva

Ellinas

Shariati

et al. 2018

2018 IEEE International Conference on Communications (ICC)

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to account for the PLIs, the QoT estimator tool presented in [4] is used. This tool calculates the QoT of new lightpaths to be established in the network as well as the impact on existing connections when setting up a new one, by taking into account the analytical models of linear and nonlinear impairments of SS-FONs.…”

Section: Physical Layer Impairments and Qot In Ss-fonsmentioning

confidence: 99%

“…2(b)) are presented. In all evaluation steps, a BER of 10 -3 was used as a threshold value [4]. Hence, any connection with a higher BER is classified as rejected by the QoT estimator tool.…”

Section: Performance Evaluationmentioning

confidence: 99%

Connection Provisioning in Spectrally-Spatially Flexible Optical Networks with Physical Layer Considerations

Savva

Manousakis

Shariati

et al. 2018

2018 20th International Conference on Transparent Optical Networks (ICTON)

View full text Add to dashboard Cite

This paper presents efficient connection provisioning techniques for spectrally-spatially flexible optical networks (SS-FON) utilizing multicore fibers (MCFs) when physical layer effects are taken into consideration. To account for the physical layer effects, two approaches are presented that are used to establish a given set of demands. One approach is to provision the requests that have acceptable quality-of-transmission (QoT) assuming a fully-loaded network for specific modulation formats, so that in the future these connections will remain feasible when subsequently new connections are established. This approach restricts the candidate path space to ensure that an established connection has acceptable QoT irrespective of the network state. The second approach is to take into account the current state of the network during the provisioning of each connection request. In the latter approach, the algorithm has to also ascertain if the establishment of a new connection will negatively impact some of the already established connections. Network resource utilization and connection blocking metrics are considered during the design of the provisioning techniques while also accounting for the PLIs.

show abstract

Fragmentation Metrics in Spectrally-Spatially Flexible Optical Networks

Lechowicz

Tornatore

Włodarczyk

et al. 2020

Optical Network Design and Modeling

View full text Add to dashboard Cite

Spectrally-spatially flexible optical networks (SS-FONs) are proposed as a solution for future traffic requirements in optical backbone networks. As SS-FONs operate within flexgrid, the provisioning of lightpaths spanning multiple frequency slots results in spectrum fragmentation, especially in presence of dynamic traffic. Fragmentation, in turn, may lead to blocking of dynamic requests due to the lack of sufficiently-large free spectral windows. In this paper, to reach a better understanding of fragmentation in SS-FON, we extend several metrics used in (singlecore) elastic optical networks to measure the fragmentation in SS-FONs. Next, we apply these metrics to a dynamic-routing algorithm with the goal of minimizing bandwidth blocking. Finally, we analyze the impact of spatial continuity constraint (SCC) on the network fragmentation. Simulations run on two representative network topologies show that the root mean square factor metric yields the best performance in terms of blocking when compared to other analyzed metrics.

show abstract

Spectrally-Spatially Flexible Optical Networking

Cited by 8 publications

References 4 publications

Physical Layer-Aware Routing, Spectrum, and Core Allocation in Spectrally-Spatially Flexible Optical Networks with Multicore Fibers

Physical Layer-Aware Routing, Spectrum, and Core Allocation in Spectrally-Spatially Flexible Optical Networks with Multicore Fibers

Connection Provisioning in Spectrally-Spatially Flexible Optical Networks with Physical Layer Considerations

Fragmentation Metrics in Spectrally-Spatially Flexible Optical Networks

Contact Info

Product

Resources

About