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70 results on '"Cantono, Mattia"'

1. Frequency stability and phase noise measurements of a 5,860 km-long intercontinental seafloor optical fibre cable

Author

Marra, Giuseppe, Gaynor, Paul, Cantono, Mattia, Kamalov, Valey, Mulholland, Sean, Hill, Ian, Schioppo, Marco, Gaudron, Jacques-Olivier, Edreira, Irene-Barbeito, Clivati, Cecilia, and Calonico, Davide

Subjects
Physics - Instrumentation and Detectors, Physics - Optics
Abstract

Optical clock comparison via optical fibre links has been achieved over continental scales, but has not yet been demonstrated intercontinentally. The transfer of ultra-stable optical frequencies over transoceanic distances is a challenging task, as the seafloor cable architecture prevents the use of environmental noise suppression techniques currently employed on land-based metrological links. As a fundamental first step towards devising suitable frequency transfer techniques to enable future clock comparison on a global scale, here we show the free-running frequency stability and phase noise measurements of a transatlantic seafloor optical link between the UK and Canada. To the best of our knowledge, these are the first ever measurements of an intercontinental optical fibre link.

Published
2022

2. Solar storms and submarine internet cables

Author

Castellanos, Jorge C., Conroy, Jo, Kamalov, Valey, Cantono, Mattia, and Hölzle, Urs

Subjects
Physics - Space Physics, Astrophysics - Solar and Stellar Astrophysics, Physics - Geophysics
Abstract

Coronal mass ejections (CMEs) can trigger geomagnetic storms and induce geoelectric currents that degrade the performance of terrestrial power grid operations; in particular, CMEs are known for causing large-scale outages in electrical grids. Submarine internet cables are powered through copper conductors spanning thousands of kilometers and are vulnerable to damage from CMEs, raising the possibility of a large-scale and long-lived internet outage. To better understand the magnitude of these risks, we monitor voltage changes in the cable power supply of four different transoceanic cables during time periods of high solar activity. We find a strong correlation between the strength of the high-frequency geomagnetic field at the landing sites of the systems and the line voltage change. We also uncover that these two quantities exhibit a near-linear power law scaling behavior that allows us to estimate the effects of once-in-a-century CME events. Our findings reveal that long-haul submarine cables, regardless of their length and orientation, will not be damaged during a solar superstorm, even one as large as the 1859 Carrington event., Comment: 19 pages, 5 figures

Published
2022

3. Observing the Effect of Polarization Mode Dispersion on Nonlinear Interference Generation in Wide-Band Optical Links

Author

Pilori, Dario, Cantono, Mattia, Ferrari, Alessio, Carena, Andrea, and Curri, Vittorio

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

With the extension of the spectral exploitation of optical fibers beyond the C-band, accurate modeling and simulation of nonlinear interference (NLI) generation is of the utmost performance. Models and numerical simulation tools rely on the widely used Manakov equation (ME): however, this approach when considering also the effect of polarization mode dispersion (PMD) is formally valid only over a narrow optical bandwidth. In order to analyze the range of validity of the ME and its applicability to future wide-band systems, we present numerical simulations, showing the interplay between NLI generation and PMD over long dispersion-uncompensated optical links, using coherent polarization division multiplexing (PDM) quadrature amplitude modulation (QAM) formats. Using a Monte-Carlo analysis of different PMD realizations based on the coupled nonlinear Schr\"{o}dinger equations, we show that PMD has a negligible effect on NLI generation, independently from the total system bandwidth. Based on this, we give strong numerical evidence that the ME can be safely used to estimate NLI generation well beyond its bandwidth of validity that is limited to the PMD coherence bandwidth.

Published
2019
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4. Introducing the Generalized GN-model for Nonlinear Interference Generation including space/frequency variations of loss/gain

Author

Cantono, Mattia, Pilori, Dario, Ferrari, Alessio, and Curri, Vittorio

Subjects
Physics - Optics
Abstract

We develop and present a generalization of the GN-model - the generalized Gaussian noise (GGN) model - to enabling a fair application of GN-model to predict generation of nonlinear interference when loss parameters relevantly vary with frequency and/or distributed amplification applies selectively to portions of the exploited spectrum and/or stimulated-Raman-scattering-induced crosstalk is relevant., Comment: Corrections and reference update

Published
2017
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5. Seismic and environmental observations from a North Atlantic seafloor sensor array created from a trans-oceanic submarine cable

Author

Marra, Giuseppe, Fairweather, David, Kamalov, Valey, Gaynor, Paul, Cantono, Mattia, Mulholland, Sean, Baptie, Brian, Castellanos, Jorge, Vagenas, Georgios, Gaudron, Jacques-Olivier, Kronjäger, Jochen, Hill, Ian, Schioppo, Marco, Barbeito Edreira, Irene, Burrows, Kathryn, Clivati, Cecilia, Calonico, Davide, and Curtis, Andrew

Abstract

Optical interferometry can be used to measure the propagation time of the light along fibre optic cables, enabling the detection of environmental perturbations such as earthquake waves as they interact with the fibre [Marra et al., 2018]. However, at any point in time, the measured signal is an integration of the optical path length changes along the entire fibre. This can result in a high measurement noise floor since the ambient noise along the entire length of the seafloor cable is integrated. Over the lengths of thousands of kilometres of transoceanic seafloor cables, this can prevent the detection of smaller magnitude events.We present a novel technique that allows many discrete spans along a single fibre optic cable to be used as individual ocean bottom seismometers. These spans are tens of kilometres long and this reduction in length of each line-receiver allows us to monitor specific locations along the cable path. From an observation window of four months, we show that earthquakes, tides, wave heights and ocean microseisms can all be recordedon individual spans between repeaters on a 5,860 km-long transatlantic cable, in addition to monitoring along the whole cable length.On the continental shelf we observe strong correlations between periodic signals at different frequencies with tides, wave heights and microseisms. In the comparatively quieter deep ocean we have detected two teleseismic earthquakes greater than Mw7. Other enigmatic signals related to ocean tides and the solid Earth’s microseisms are also evident., The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)

Published
2023

10. Seismic Sensing in Submarine Fiber Cables

Author

Cantono, Mattia, primary, Castellanos, Jorge C., additional, Kamalov, Valey, additional, Mecozzi, Antonio, additional, Muller, Rafael, additional, Yin, Shuang, additional, and Zhan, Zhongwen, additional

Published
2021
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12. Towards multi-method geophysical sensing on submarine cables 

Author

Zhan, Zhongwen, primary, Cantono, Mattia, additional, Castellanos, Jorge, additional, González Herráez, Miguel, additional, Jia, Zhensheng, additional, Kamalov, Valey, additional, Martins, Hugo, additional, Mecozzi, Antonio, additional, Müller, Rafael, additional, Shen, Zhichao, additional, Williams, Ethan, additional, and Yin, Shuang, additional

Published
2021
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16. Single-Mode Fiber SDM Submarine Systems

Author

Bolshtyansky, Maxim A., primary, Sinkin, Oleg V., additional, Paskov, Milen, additional, Hu, Yue, additional, Cantono, Mattia, additional, Jovanovski, Ljupco, additional, Pilipetskii, Alexei N., additional, Mohs, Georg, additional, Kamalov, Valey, additional, and Vusirikala, Vijay, additional

Published
2020
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20. Coupled vs. Uncoupled SDM Solutions: A Physical Layer Aware Networking Comparison

Author

Ferrari, Alessio, Cantono, Mattia, and Curri, Vittorio

Subjects
multicore fibers, physical layer aware networking, space division multiplexing (SDM), strongly coupled multicore fibers, transparent elastic optical network, wavelength division multiplexing (WDM) networks, Computer Networks and Communications, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Multi-core processor, Computer science, Distributed computing, Physical layer, Process (computing), 02 engineering and technology, Interference (wave propagation), Nonlinear system, 020210 optoelectronics & photonics, Cardinality, Face (geometry), Electronic, 0202 electrical engineering, electronic engineering, information engineering, Optical and Magnetic Materials, Implementation
Abstract

Spatial division multiplexing (SDM) is a possible solution to face the growth of data traffic. We compare performances of two SDM implementations: uncoupled fiber ribbons (UFR) and coupled-core multicore fibers (SCMCF). Respect to UFRs, SCMCFs mitigates nonlinear interference (NLI), but signals must be added/dropped simultaneously on/from all cores. In literature, mitigation of NLI in SCMCFs is investigated in point-to-point scenarios, while networking investigations are focused on switching issues. Exploiting the statistical network assessment process, we compare the two solutions jointly analyzing propagation and switching issues in scenarios with SDM cardinality of three, showing that UFRs enable larger traffic load.

Published
2018

21. Physical Layer Aware Optical Networks

Author

Cantono, Mattia

Subjects
Nonlinear modeling, Optical Networks, QoT, Physical Layer Awareness, Transparent networks, Nonlinear modeling, Settore ING-INF/03 - Telecomunicazioni, Transparent networks, Physical Layer Awareness, QoT, Optical Networks
Published
2018

22. A WDM Network Controller With Real-Time Updates of the Physical Layer Abstraction

Author

Zhang, Tianliang, primary, Samadian, Azadeh, additional, Shakeri, Ali, additional, Mirkhanzadeh, Behzad, additional, Shao, Chencheng, additional, Razo, Miguel, additional, Tacca, Marco, additional, Ferrari, Alessio, additional, Cantono, Mattia, additional, Curri, Vittorio, additional, Martinelli, Giovanni, additional, Galimberti, Gabriele Maria, additional, Xia, Tiejun, additional, Wellbrock, Glenn, additional, and Fumagalli, Andrea, additional

Published
2019
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31. A Two-Layer Network Solution for Reliable and Efficient Host-to-Host Transfer of Big Data

Author

Ferrari, Alessio, primary, Cantono, Mattia, additional, Mirkhanzadeh, Behzad, additional, Lu, Zhen, additional, Shakeri, Ali, additional, Shao, Chencheng, additional, Tacca, Marco, additional, Razo, Miguel, additional, Fumagalli, Andrea, additional, Martinelli, Giovanni, additional, Galimberti, Gabriele Maria, additional, and Curri, Vittorio, additional

Published
2018
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