Options for cost-effective capacity upgrades in backbone optical networks
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
Upgrading the capacity of backbone optical networks while delivering contents to the end-users with a reduced cost per bit is a day-by-day challenge of network operators. In this paper, we first discuss several mid-term options for capacity upgrades including migration to multi-fibre and multi-band systems (utilizing amplification systems with bandwidth extending over the C+L or the S+C+L bands). The multi-band approach is shown to be more costeffective than the multi-fibre approach under certain circumstances. We then focus on space-division multiplexing (SDM) based networks as the ultimate solution to address the capacity crunch. We compare the performance and infrastructure cost of possible SDM switching options for a solution based on bundles of single-mode fibres as a first pragmatic generation of SDM networks. We show that the use of spatial-group switching reduces the switching-related infrastructure cost of the SDM network and can also lead to extra cost savings due to sharing of elements in other parts of the network.
CitationShariati, B., Rivas-Moscoso, J., Klonidis, D., Tomkos, I., Ben, S., Jimenez, F., Marom, D., Khodashenas, P., Comellas, J., Velasco, L. Options for cost-effective capacity upgrades in backbone optical networks. A: European Conference on Networks and Optical Communications. "2016 21st European Conference on Networks and Optical Communications (NOC) took place 1-3 June 2016 in Lisbon, Portugal". Lisboa: Institute of Electrical and Electronics Engineers (IEEE), 2016, p. 35-40.
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