Flexible Technologies to Increase Optical Network Capacity

Lord, Andrew; Savory, Seb J.; Tornatore, Massimo; Mitra, Abhijit

doi:10.1109/jproc.2022.3188337

Cited by 21 publications

(4 citation statements)

References 53 publications

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“…Recent advances in coherent optical transmission have brought unprecedented elasticity in tuning transponder parameters such as baud-rate, modulation format, forward-error correction overhead, etc. Other emerging technologies such as bandwidth-variable transponders (BVTs) with adaptive baudrate and modulation format, tuned dynamically to the required transmission distance, and bandwidth-variable optical crossconnects can bring significant benefits to network capacity with a flex-grid [223]. The optical switch architectures should evolve towards fiber switching to handle a large number of fiber inputs, each with dynamically varying spectral utilization.…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

Roadmap on optical communications

Agrell,

Karlsson,

Poletti

et al. 2024

J. Opt.

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The Covid-19 pandemic showed forcefully the fundamental importance broadband data communication and the internet has in our society. Optical communications forms the undisputable backbone of this critical infrastructure, and it is supported by an interdisciplinary research community striving to improve and develop it further. Since the first ‘Roadmap of optical communications’ was published in 2016, the field has seen significant progress in all areas, and time is ripe for an update of the research status. The optical communications area has become increasingly diverse, covering research in fundamental physics and materials science, high-speed electronics and photonics, signal processing and coding, and communication systems and networks. This roadmap describes state-of-the-art and future outlooks in the optical communications field. The article is divided into 20 sections on selected areas, each written by a leading expert in that area. The sections are thematically grouped into four parts with 4–6 sections each, covering, respectively, hardware, algorithms, networks and systems. Each section describes the current status, the future challenges, and development needed to meet said challenges in their area. As a whole, this roadmap provides a comprehensive and unprecedented overview of the contemporary optical communications research, and should be essential reading for researchers at any level active in this field.

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Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

Roadmap on optical communications

Agrell,

Karlsson,

Poletti

et al. 2024

J. Opt.

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“…Global data traffic has experienced significant growth in recent years, and it is expected to continue increasing primarily driven by the emergence of groundbreaking 6G applications and services, such as augmented reality, holographic communications, and even more sophisticated AI applications, which will require stringent requirements in terms of data rate/bandwidth and latency having an impact in the evolution of optical networks [1,2]. This exponential growth will imply a change in terms of volume and distribution of traffic in the network, highlighting the importance of flexible, robust, scalable, reliable, and highcapacity optical networks [3]. According to [1], in the aggregation metro segment, the flow capacities from access nodes directed towards additional nodes, particularly regional nodes, are foreseen to escalate to a maximum of 2 Tb/s in the medium term and an impressive 8 Tb/s in the long term.…”

Section: Introductionmentioning

confidence: 99%

The Multiband over Spatial Division Multiplexing Sliceable Transceiver for Future Optical Networks

Nadal,

Ali,

Vílchez

et al. 2023

Future Internet

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In the last 15 years, global data traffic has been doubling approximately every 2–3 years, and there is a strong indication that this pattern will persist. Hence, also driven by the emergence of new applications and services expected within the 6G era, new transmission systems and technologies should be investigated to enhance network capacity and achieve increased bandwidth, improved spectral efficiency, and greater flexibility to effectively accommodate all the expected data traffic. In this paper, an innovative transmission solution based on multiband (MB) over spatial division multiplexing (SDM) sliceable bandwidth/bitrate variable transceiver (S-BVT) is implemented and assessed in relation to the provision of sustainable capacity scaling. MB transmission (S+C+L) over 25.4 km of 19-cores multicore fibre (MCF) is experimentally assessed and demonstrated achieving an aggregated capacity of 119.1 Gb/s at 4.62×10−3 bit error rate (BER). The proposed modular sliceable transceiver architecture arises as a suitable option towards achieving 500 Tb/s per fibre transmission, by further enabling more slices covering all the available S+C+L spectra and the 19 cores of the MCF.

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“…Today's optical core network systems in most real-world cases operate in regions up to a maximum of 100 Gb/s per transmission channel and 50 GHz channel spacing in fixed of flexible spectrum grid. 1,2 Although these transmission speeds can still be limited by electronic systems, we will soon go beyond them and electronic processing will represent the weakest point in the optical transmission chain.…”

Section: Introductionmentioning

confidence: 99%