Multi-band transparent optical network planning strategies for 6G-ready European networks

Patri, Sai Kireet; Autenrieth, Achim; Elbers, Jörg-Peter; Machuca, Carmen Mas

doi:10.1016/j.yofte.2022.103118

Cited by 8 publications

(11 citation statements)

References 33 publications

(59 reference statements)

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“…For the planning scenarios, the links are assumed to be standard single-mode fiber (SSMF) links [26], consisting of 80 km spans with perfect compensation of the fiber attenuation at the end of each span by an EDFA for C and L-band and a TDFA for S-band. We assume 5 dB, 5.5 dB and 7 dB noise figures for the amplifiers in C-,L-, and S-band, respectively [12]. The transmit power spectral density is set according to [23].…”

Section: A Setupmentioning

confidence: 99%

“…Aggregated traffic requests for source-destination node pairs are considered as demands. The demands are weighted according to a traffic model based on the number of data centers and internet exchange points in each ROADM location [12]. To vary the network traffic demands, the individual demands are scaled by the same factor in order to reach different levels of aggregate requested network traffic (ART).…”

Section: A Setupmentioning

confidence: 99%

“…To vary the network traffic demands, the individual demands are scaled by the same factor in order to reach different levels of aggregate requested network traffic (ART). The routing, configuration, and spectrum assignment (RCSA) algorithm [12] considers k = 3 shortest-path routing. The spectrum is assigned according to the first-fit algorithm.…”

Section: A Setupmentioning

confidence: 99%

“…A software-defined networking-based optical network planning framework for the adaption of a PS-capable BVT according to optical SNR (OSNR) has been demonstrated in a field trial [9]. Several approaches to network planning for flexible-grid EONs have been proposed [10][11][12][13]. The benefits of high-symbol rate next-generation BVTs using traditional modulation formats have also been studied [14].…”

Section: Introductionmentioning

confidence: 99%

“…Multi-band deployment strategies have also been investigated [20]. Significant gains in network throughput have been shown in network planning studies for multi-band systems [12,21]. Meaningful multi-band network planning studies require consideration of frequency-dependent physical parameters and inter-channel stimulated Raman scattering (ISRS) for accurate quality of transmission (QoT) estimation.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Physical-layer-aware multi-band optical network planning framework for rate-adaptive transceivers

Müller,

Di Rosa,

Jovanovic

et al. 2024

J. Opt. Commun. Netw.

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Flexible-grid elastic optical networks (EONs) have recently been widely deployed to support the growing demand for bandwidth-intensive applications. For cost-efficient scaling of the network capacity, multi-band systems are a promising solution. Optimized utilization of EONs is required to delay cost-extensive network upgrades and to lower cost and power consumption. Next-generation bandwidth-variable transceivers (BVTs) will offer increased adaptivity in symbol rate and modulation through techniques such as probabilistic shaping (PS). In this work, we investigate the impact of increased configuration granularity on optical networks. We account for practical implementation considerations of BVT configurations for estimating the required signal-to-noise ratio. Additionally, an optimization algorithm is presented that selects the most efficient configuration for each considered data rate and bandwidth combination. We utilize advanced quality of transmission estimation modeling to evaluate PS configurations in multi-band systems with optimized launch power distributions. We present results of network planning studies for C-band systems in a national and a continental optical backbone network topology considering different granularities of the configurations. Our analysis confirms that finer modulation-based rate-adaptivity results in substantial resource savings, decreasing the number of necessary lightpaths by at most 13% in C-band EONs. Additional savings are observed in multi-band systems, showing further increased savings in the number of required lightpaths of up to 20%. In contrast, increased symbol rate granularity only results in minor savings.

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Section: A Setupmentioning

confidence: 99%

Section: A Setupmentioning

confidence: 99%

Section: A Setupmentioning

confidence: 99%