Annachiara Pagano - Academia.edu (original) (raw)

Papers by Annachiara Pagano

2023 23rd International Conference on Transparent Optical Networks (ICTON)

We present results of a field trial carried on Telecom Italia EDFA-only legacy link with 0.3 dB/k... more We present results of a field trial carried on Telecom Italia EDFA-only legacy link with 0.3 dB/km average fiber attenuation. Single carrier 200G WDM DP-4QAM, DP-8QAM and DP-16QAM were successfully transmitted with system margin of 4.1 dB, 4.3 dB and 2.6 dB respectively.

Optics Express, Oct 28, 2022

2022 Italian Conference on Optics and Photonics (ICOP)

Next-Generation Optical Communication: Components, Sub-Systems, and Systems VII, 2018

Optical terabit transmitter and receiver based on passive polymer and InP technology for high-spe... more Optical terabit transmitter and receiver based on passive polymer and InP technology for high-speed optical connectivity between datacenters,"

2016 18th International Conference on Transparent Optical Networks (ICTON), 2016

In this paper we present a multi-flow transmitter developed within the EU project PANTHER and we ... more In this paper we present a multi-flow transmitter developed within the EU project PANTHER and we evaluate its first proof-of-concept demonstration of up to two single- or dual-polarization optical flows with selectable wavelength, m-QAM modulation format, number of carriers and destination. Multiflow operation is realized by two polymer boards allowing optical carrier management and optional polarization multiplexing on chip. Optical carrier generation is performed also on chip using three tunable InP gain chips hybridly integrated on the input polyboard. Single and dual optical flow generation is feasible with appropriate distribution of the client data in the digital domain and encapsulation into OTN containers. Configuration of the electrical and optical transmitter resources is performed via a developed software defined optics (SDO) platform residing on top of the transmitter and acting as the interface between any software defined switch and the physical layer transport equipment. The transmitter has been evaluated within a flexible network node comprising programmable flexible wavelength selective switches (WSSs). Two single-flow scenarios based on a dual-polarization m-QAM signal and a two-carrier m-QAM optical flow and dual-flow scenarios based on two independent m-QAM signals have been evaluated at 28 Gbaud after transmission over 100 km standard single mode fiber (SSMF).

Artificial Intelligence Applications and Innovations. AIAI 2021 IFIP WG 12.5 International Workshops, 2021

Journal of Optical Communications and Networking, 2020

We present a fixed mobile convergence topology for analog intermediate frequency over fiber (A-IF... more We present a fixed mobile convergence topology for analog intermediate frequency over fiber (A-IFoF)/millimeter-wave (mmWave) transmission, benefiting from the reuse of the deployed passive optical network (PON) infrastructure, towards future mobile fronthaul architectures. Powerful fully programmable gate array boards located inside the access nodes convert the Ethernet-based traffic to orthogonal frequency-division multiplexing (OFDM)-modulated intermediate frequency (IF) waveforms, supporting the A-IFoF propagation through the optical legacy infrastructure. Coexistence of the 5G traffic with the residential legacy traffic for the field propagation is achieved through utilization of unused C-band channels and wavelength-division multiplexing. To this extent, we experimentally demonstrate the downlink operation of a converged A-IFoF/mmWave link, over Telecom Italia’s legacy infrastructure located at Turin. Four-quadrature amplitude modulation (QAM)-OFDM and 16QAM-OFDM IF signals wi...

IEEE Photonics Technology Letters, 2017

DOI to the publisher's website. • The final author version and the galley proof are versions of t... more DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal. If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement:

IEEE Photonics Technology Letters, 2016

We propose a novel multi-flow transmitter concept capable of controlling the number, type, wavele... more We propose a novel multi-flow transmitter concept capable of controlling the number, type, wavelength and destination of the generated optical flows depending on the client traffic. The concept is based on the selection of the number of optical carriers per flow and the selection between single-or dual-polarization flows. We demonstrate the proof-of-concept combining two commercial IQ modulators with two prototype polymer circuits, which integrate three tunable lasers for flexible wavelength allocation, four thermo-optic switches for flexible optical routing on-chip, and elements for polarization handling on-chip. We incorporate this transmitter inside an optical node and we investigate 1-flow scenarios with dual-carrier or dualpolarization quadrature phase shift keying (QPSK) modulation, and 2-flow scenarios based on two independent QPSK signals. The transmitter and node configuration is controlled by a software-defined optics (SDO) platform. We demonstrate dynamic operation at 28 Gbaud and error-free coherent transmission over 100 km of standard single-mode fiber (SSMF).

2015 European Conference on Optical Communication (ECOC), 2015

The matching between Add&Drop (A&D) and S-BVT in EONs is investigated. Two A&D archit... more The matching between Add&Drop (A&D) and S-BVT in EONs is investigated. Two A&D architectures have been identified avoiding or not channel contentions. A trade-off between costs and flexibility can be found depending on the status of the network.

2014 16th International Conference on Transparent Optical Networks (ICTON), 2014

A finite group has an abelian S2 if and only if every 2-element is 2-central. In his survey talk ... more A finite group has an abelian S2 if and only if every 2-element is 2-central. In his survey talk at the AMS Summer Institute on Finite Group Theory, Santa Cruz, Califormia, 1979, Walter Feit mentioned the following problem: Can one read from the character table of a finite group if its Sylow /»-subgroups are abelian?

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Journal of Optical Communications and Networking, 2022

The deployment of the new 5G system and ultra-broadband access networks, on one side, and the adv... more The deployment of the new 5G system and ultra-broadband access networks, on one side, and the advent of network disaggregation and cloudification paradigms, on the other, are producing disruptive changes in metropolitan area networks (MANs). The new central offices will be more like small data centers than traditional Telco-type central offices. The presence of general-purpose servers, in partial or total replacement of specialized equipment or cards, and also hosting new functions and services, significantly changes the way the central office is organized and how the equipment internetworks. After having defined a reference architecture named cloudified-MAN, the paper briefly introduces the enabling technologies that include information technology (IT) systems, packet switches, and optical equipment. A disaggregated model is applied to all layers and systems. In the optics field, special insight on high data rate (up to 1.6 Tb/s) transceiver technology developed by the TERIPHIC project is provided as an example of low-cost and low-power technology. Through a quantitative techno-economic case study on a realistic network scenario aimed at short-term and medium-term time horizons, the paper provides indications on what could be the impact of the new architecture on costs and energy consumption. The main outcome of the study is that the IT and optical parts are those with the highest fractions of overall cost, and specifically for the optics, the cost of wavelength division multiplexing transceivers increases significantly in the medium term due to the demand for high-capacity connections (>400Gb/s), while the line system cost (reconfigurable optical add-drop multiplexer) decreases in percentage. Another significant result is that in terms of energy consumption, the IT component has been found to be the dominant one (70%–75% of the total), followed by packet devices (about 20%–25%) and optical systems, the latter with significantly lower percentage values (less than 5%) in all cases analyzed.

2020 Italian Conference on Optics and Photonics (ICOP), 2020

Next generation PON targeting 50 Gbit/s/lambda (50G-PON) based on intensity modulation and direct... more Next generation PON targeting 50 Gbit/s/lambda (50G-PON) based on intensity modulation and direct detection (IM-DD) will likely be under strong bandwidth limitations. We present a PAM-2 and Electrical DuoBinary performance analysis of 50 Gbps PON system by using 25G and 50G transceivers technology with several optical receiver architectures and study of the adaptive equalization impact.

Next generation PON physical layer, targeting 50 Gbit/s/lambda, has to deal with optoelectronics ... more Next generation PON physical layer, targeting 50 Gbit/s/lambda, has to deal with optoelectronics bandwidth limitation. In this invited paper, we review the resulting required bandwidths and discuss the trade-off between receivers with or without equalization.

Existing transceiver technology inside data centers will soon reach its limits due to the enormou... more Existing transceiver technology inside data centers will soon reach its limits due to the enormous traffic growth rates driven by new, bandwidth-hungry applications. Efforts to develop the next generation of 800Gbps and 1.6Tbps transceivers for intra-DC optical interconnects have already kicked-off to address the demands in traffic, the exhaustion of the ports at the digital switches and the power consumption limitations inherent to the use of many lower capacity modules. The new generation of optical modules must also provide Terabit capacities at low cost, necessitating the use of high-volume manufacturing processes. TERIPHIC is an EU funded R and D project that aims at developing transceiver modules with up to 1.6 Tbps capacity over 16 lanes in duplex fiber and cost less than 1 € per Gbps for distances up to 2 km, utilizing PAM-4 modulation for 100Gbps per lane and high-volume production compatible transceiver designs. At the component level, TERIPHIC will rely on arrays of high-...

2021 European Conference on Optical Communication (ECOC)