A5027623219- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Optical Network Technologies
- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Optic Sensors
- Software-Defined Networks and 5G
- Power Line Communications and Noise
- Photonic Crystal and Fiber Optics
- VLSI and Analog Circuit Testing
- Quantum Computing Algorithms and Architecture
- Radiation Effects in Electronics
- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Advanced Fiber Laser Technologies
- Interconnection Networks and Systems
- Telecommunications and Broadcasting Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- IoT and Edge/Fog Computing
- Vehicle Routing Optimization Methods
- Distributed systems and fault tolerance
- Advanced Wireless Communication Techniques
- Physical Unclonable Functions (PUFs) and Hardware Security
- PAPR reduction in OFDM
- Optical Coatings and Gratings
Telecom Italia (Italy)
2015-2024
Innova (Italy)
2022-2023
Innovation Engineering (Italy)
2018
University of Peloponnese
2015
Telecom Italia Lab
1996-2002
University of Bologna
2002
This paper reports the work on next generation transponders for optical networks carried out within last years.A general architecture supporting super-channels (i.e., connection composed of several adjacent sub-carriers) and slice-ability sub-carriers grouped in a number independent with different destinations) is presented.Several transponder implementations transmission techniques are considered, highlighting advantages, economics complexity.Discussions include electronics, components,...
In this work we detail the strategies adopted in European research project IDEALIST to overcome predicted data plane capacity crunch optical networks. order for core and metropolitan telecommunication systems be able catch up with Internet traffic, which keeps growing exponentially, exploit elastic networks paradigm its astounding characteristics: flexible bandwidth allocation reach tailoring through adaptive line rate, modulation formats, spectral efficiency. We emphasize novelties stemming...
An optical network, like any system, has to be observable before it can become subject optimization, and this is the main capability that ORCHESTRA project introduces. ORCHESTRA's high observability will rely on information provided by coherent transceivers extended, almost for free, operate as software defined performance monitors (soft-OPM). Novel digital signal processing (DSP) OPM algorithms developed combined with a novel hierarchical monitoring plane, cross-layer optimization...
Passive optical network (PON) based on coherent detection has attracted a great deal of attention in recent years as future solution for 100+ Gbps per wavelength. Particularly 200G-PON, one the most attractive options would be to switch QAM transmission and detection, due its well know advantages compared Direct-Detection approaches used so far PON. However, technology, extensively core networks, costs that are still perceived too high access ecosystem. In order perform cost reduction, some...
We present an experimental demonstration and analytical scaling of optically amplified metro combined with PON access transmission over installed fibers, using coherent 50GBaud PM-16QAM discuss the technical feasibility future 400G metro-access convergence.
We report on the results of a field trial carried out Telecom Italia metro link, targeting short data center interconnect applications. The test-bed presented realistic transmission conditions, such as an average ~0.3-dB/km attenuation and usage legacy erbium-doped fiber amplifier (EDFA) only. transmitted net bit rate 400 Gb/s single carrier with 64 quadrature amplitude modulation (QAM) 128QAM over 156 km. Error-free 80 km for dense wavelength-division multiplexing (DWDM) 30 × 400G 64QAM...
To ensure uninterrupted communication in optical transport networks, the common practice is to overprovision lightpaths terms of capacity and physical layer performance. Over-provisioning at achieved using worst case assumptions high margins estimation Quality Transmission (QoT) when provisioning lightpaths. End-of-Life system are used anticipate performance deteriorations due additional future interference, ageing, maintenance operations, while design margin account for inaccuracies QoT...
We present a fixed mobile convergence topology for analog intermediate frequency over fiber (A-IFoF)/millimeter-wave (mmWave) transmission, benefiting from the reuse of deployed passive optical network (PON) infrastructure, towards future fronthaul architectures. Powerful fully programmable gate array boards located inside access nodes convert Ethernet-based traffic to orthogonal frequency-division multiplexing (OFDM)-modulated (IF) waveforms, supporting A-IFoF propagation through legacy...
We propose and demonstrate a novel O-band wavelength division multiplexing (WDM) optical transceiver enabled by the hybrid photonic integration of indium phosphide (InP) components into polymer-based motherboard called PolyBoard. The engine hosts an eight-fold InP electro-absorption modulated laser (EML) array at transmitter part exhibiting >35GHz electro-optical bandwidth photodiode (PD) receiver with 50 GHz bandwidth, butt-end coupled to PolyBoard motherboard, which accommodates passive...
Gain in the S-band is demonstrated a thulium-doped tellurite fiber amplifier using dual pump and bidirectional pumping schemes. Two schemes were employed: 795/1064 1047/1550 nm. The gain profile broader than achieved fluoride overlaps with C-band of erbium-doped amplifier. We reach fiber-to-fiber 11 dB an internal 35 dB.
The common practice in optical networks is to deploy them statically a future proof approach and operate with only traffic/fault driven changes. Lightpaths are overprovisioned high quality of transmission (QoT) margins anticipate degradations, due interference, aging, maintenance operations, account for inaccuracies QoT estimation. Such assumptions decrease network efficiency increase the cost. Moreover, transponders regenerators assigned once demands, yielding low if traffic varies...
This paper reports the network operator point of view about introduction quantum key distribution (QKD) in optical networks to secure data plane and/or specific applications, focusing on design aspects that go beyond pure transmission. The functional architecture a is depicted integration existing telecommunications infrastructure. Some use cases utilization QKD layer, presenting results from in-field demonstrations, are reported together with technology agnostic numerical model resource...
We experimentally demonstrate real time error free transmission over more than 65 hours using a 400G rate adaptive flexible-grid transponder in metro regional Telecom Italia multivendor environment. Transmission G.652 field link and G.655 E-LEAF path with legacy DWDM equipment co-propagating commercial coherent 40G 100G channels was successfully achieved spectral efficiency of 5.33 b/s/Hz.
This paper presents a technoeconomical comparison between different emerging architectural approaches for 5G networks: C-RAN, centralized, where BBU hotel collects several fronthauling streams, able to meet challenging requirements imposed by technology and DA-RAN, considered as an evolution of resources are disaggregated in order satisfy the applications. Main results, obtained analytical evaluation cost metropolitan area network, show that disaggregating hardware software radio access...
As traffic demands become more uncertain and newer services continuously arise, novel network elements are needed to provide flexibility, scalability, resilience adaptability today's optical networks. Considering these requirements, within the European project IDEALIST investigation of elastic networks is undertaken with special focus on next generation node architectures. an evolution existent ROADMs OXCs, nodes will establish a new paradigm in which requirements be efficiently addressed...
The current challenge for the physical layer of next generation optical access network based on PON architectures is to increase capacity above 100 Gbps per wavelength. This target may require a revolution PON, moving from direct detection (DD) advanced modulation formats and coherent detection. In fact, performances full-coherent systems ultra-high bit rates are, in terms receiver sensitivity, significantly better than standard DD receivers, obtaining power budget more 30 dB. this scenario...
5G New Radio's (NR) spectrum expansion towards higher bands, although critical achieving the envisioned capacity requirements, creates need for installing a very large number of Access Points (APs), which asserts tremendous capital burden on Mobile Network Operators. Current centralization solutions such as Cloud Radio (C-RAN) alleviate partially costs densification by moving majority radio processing functionalities from Remote Heads (RRHs) to central Base Band Unit (BBU), but still require...
During the past years, monolithic integration in InP has been driving force for realization of integrated photonic routing systems. The advent silicon as a basis cost-effective and its potential blend with III-V material is now opening exciting opportunities development new, high-performance switching equipment. Following this rationale, BOOM-as European research initiative-aims to develop compact, cost-effective, power-efficient components enable optical Tb/s routers current new generation...
Abstract The security of data communications is one the crucial challenges that our society facing today. Quantum Key Distribution (QKD) most prominent methods for guaranteeing ultimate based on laws quantum physics. In this work, results obtained during Italian Industry 4.0 Testbed (II4QuTe) project are reported where authors realised a QKD testbed securely connecting Competence Manufacturing (CIM4.0) located in Torino and TIM edge node 10 km away from testbed. accommodates server providing...
We experimentally demonstrate real-time error-free transmission for longer than 65 h using a 400G rate-adaptive flexible-grid transponder in metro regional Telecom Italia multivendor environment. Transmission over G.652 field link and G.655 E-LEAF path with legacy dense wavelength division multiplexing equipment co-propagating commercial coherent 40G 100G channels was successfully achieved spectral efficiency of 5.33 b/s/Hz.
We present an algorithm that provisions lightpaths considering the actual physical performance and use it in a multi-period planning scenario to postpone equipment deployment. This, yields savings compared current provisioning practice with End-Of-Life margins.
We propose a novel multi-flow transmitter concept capable of controlling the number, type, wavelength, and destination generated optical flows depending on client traffic. The is based selection number carriers per flow between single- dual-polarization flows. demonstrate proof-of-concept combining two commercial In-Phase/Quadrature (IQ) modulators with prototype polymer circuits, which integrate three tunable lasers for flexible wavelength allocation, four thermo-optic switches routing...
In this paper we propose a self-checking scheme for the on-line testing of transient and crosstalk faults affecting interconnections synchronous systems implemented using Field-Programmable Gate-Arrays (FPGAs). An FPGA prototype has been implemented, whose correct operation verified by means post-layout simulations experimental measurements.
This paper reports on the general architecture for a sliceable bandwidth variable transponder as discussed within IDEALIST European project. Support super-channels (optical connections with several adjacent sub-carriers) and slice-ability (super-channels generated together but independently routed in network towards different destinations) is guaranteed. For illustrative purpose some driving ideas possible modular implementation are shown.