A5058796383- Advanced Photonic Communication Systems
- Optical Network Technologies
- Photonic and Optical Devices
- Advanced Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Millimeter-Wave Propagation and Modeling
- Software-Defined Networks and 5G
- Optical Wireless Communication Technologies
- Ultra-Wideband Communications Technology
- Radio Frequency Integrated Circuit Design
- Antenna Design and Analysis
- Quantum Computing Algorithms and Architecture
- IoT and Edge/Fog Computing
- Quantum Information and Cryptography
- Microwave Engineering and Waveguides
- PAPR reduction in OFDM
- Interconnection Networks and Systems
- Cloud Computing and Resource Management
- graph theory and CDMA systems
- Power Line Communications and Noise
- Photonic Crystals and Applications
- Advanced MIMO Systems Optimization
- Advanced Wireless Communication Technologies
- Cryptography and Data Security
Israel Electric (Israel)
2021-2024
Roskilde University
2024
National Technical University of Athens
2023
Institute of Communication and Computer Systems
2023
Nvidia (United States)
2021-2022
Mellanox Technologies (Israel)
2017-2020
Technical University of Denmark
2012-2019
Eindhoven University of Technology
2003-2019
National Institute of Information and Communications Technology
2019
Institute of Electrical and Electronics Engineers
2019
Next generation wireless communication systems face many challenges to increase the capacity and spectral efficiency of current solutions. The worldwide mobile data traffic increased 4000-fold over last decade, is forecast a 7-fold between 2016 2021. To cope with these stringent demands, prospective solutions are millimeter-wave (mmWave) technology ultradense small cell networks, given that today most offloaded from i.e., users connected fixed networks. In addition, enabled by fast...
Leveraging client optics based on intensity modulation and direct detection for point-to-point inter-data center interconnect applications is a cost power efficient solution, but challenging in terms of optical signal-to-noise ratio requirements chromatic dispersion tolerance. In this paper, real-time 8 × 28.125 GBd dense wavelength division multiplexing four-level pulse amplitude (PAM-4) transmission over up to 80 km standard single mode fiber the C-Band demonstrated. Using combination...
Real-time transmission of 400G (8×50G DWDM) PAM-4 signals for data center interconnects up to 100 km SSMF is successfully demonstrated. All channels stay well below the 802.3bj KR4 FEC limit, thus allowing error free transmission.
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> We will propose a dynamic reconfigurable wavelength-division-multiplexed (WDM) millimeter-waveband (mm-waveband) radio-over-fiber (RoF) access network and demonstrate, for the first time, dynamic-channel-allocation capability of optical RoF signals in WDM using supercontinuum light source, arrayed-waveguide gratings, optical-crossconnect switch. The architecture is presented, its features are...
We demonstrate the first known experiment of a real-time end-to-end 40-Gb/s pulse amplitude modulation (PAM)-4 system for next-generation access applications using 10-Gb/s class transmitters only. Based on measurement PAM system, low-cost upstream and downstream link power budgets are estimated. Up to 27 25 dB 10- 20-km standard single-mode fiber links erbium-doped amplifiers (EDFA) preamplifiers achieved. For booster EDFAs avalanche photodiode receivers, 26.5 24.5 feasible SMFs,...
First time successful 107.5 Gb/s MultiCAP 850 nm OM4 MMF transmissions over 10 m with multi-mode VCSEL and up to 100 single-mode are demonstrated, BER below 7% overhead FEC limit measured for each case.
To cope with the ever increasing data traffic demands in modern centers, new approaches and technologies must be explored. Short range optical links play a key role this scenario, enabling very high speed rate links. Recently, great research efforts are being made to improve performance of vertical-cavity surface-emitting lasers (VCSELs) based transmission links, which constitute cost-effective solution desirable for massive deployments. In paper, we experimentally demonstrate...
To reap its full benefits, 5G must evolve into a scalable decentralized architecture by exploiting intelligence ubiquitously and securely across different technologies, network layers, segments. In this article, we propose end-to-end ubiquitous secure machine learning (ML)-powered intent-based networking (IBN). The IBN framework is aware of state context to autonomously take proactive actions for service assurance. It integrated in zero-touch control orchestration featuring an ML function...
The reliance on asymmetric public key cryptography (PKC) and symmetric encryption for cyber-security in current telecommunication networks is threatened by the emergence of powerful quantum computing technology. This due to ability computers efficiently solve problems such as factorization or discrete logarithms, which are basis classical PKC schemes. Thus, assumption that communications secure no longer holds true. Quantum Key Distribution (QKD) post-quantum (PQC) first technologies allow...
We propose a bidirectional radio-over-fiber link consisting of an optical downlink transmission employing the frequency multiplication principle, remote local oscillator (LO) generation, down-conversion radio-frequency uplink signals, and intensity modulation-direct detection. Experiments demonstrate up-conversion 64-level quadrature amplitude modulated radio signals to 17.8 GHz after over 4.4 km multimode fiber, 12.5 25 single-mode fiber in downlink; performance is evaluated terms loss...
Full-duplex single fiber bidirectional transmission, using frequency-shift-keying modulation for downstream, by direct of a tunable laser, and intensity upstream, in wavelength-division-multiplexing passive optical access network is demonstrated. The unit, located at the end user premises, reflects orthogonally remodulates received light. Rayleigh scattering effects are reported analyzed. system shows proper operation up to 1 Gb/s 30-km reach.
In this paper, we propose a new hybrid network solution based on asynchronous optical code-division multiple-access (OCDMA) and free-space (FSO) technologies for last-mile access networks, where fiber deployment is impractical. The architecture of the proposed OCDMA-FSO thoroughly described. users in fully manner by means assigned fast frequency hopping (FFH)-based codes. FSO receiver, an equal gain-combining technique employed along with intensity modulation direct detection. New analytical...
We demonstrate 84-Gb/s four-level pulse amplitude modulation (PAM-4) over up to 1.6-km standard single mode fiber using a 20-GHz short cavity vertical surface emitting laser diode at transmission wavelength of 1525 nm. Different equalizer approaches including common feedforward equalizer, nonlinear Volterra (NLVE), maximum likelihood sequence estimator (MLSE) and their combinations are evaluated working either as an for PAM-4 or partial response signal with seven levels. It is demonstrated...
A reconfigurable dense wavelength-division-multiplexed (DWDM) access system for millimeter-waveband radio-over-fiber (RoF) is described. Focuses are on the enabling techniques such as optical-frequency-interleaved DWDM grid assignment, supercontinuum multi-wavelength light source, photonic upconversion RoF signals, and optical path switching dynamic channel allocation wireless services.
In this paper, a combined nonorthogonal multiple access (NOMA) and multiband carrierless amplitude phase modulation (multiCAP) scheme is proposed for capacity enhancement of flexible resource provisioning in 5G mobile networks. The experimentally evaluated over W-band millimeter wave radio-over fiber system. NOMA-CAP system consists six 1.25-GHz multiCAP bands two NOMA levels with quadrature phase-shift keying can provide an aggregated transmission rate 30 Gbit/s. dynamically adapt to...
This paper explores different functionalities that can be implemented directly over the optical layer, paving way for future converged wireless and wired services networks. Wireless technologies operating networks mainly employ radio-over-fiber (RoF) technologies, which effectively help to manipulate microwave millimeter-wave band signals. We have experimented with generation in order achieve distribution of signals at bands, ranging from a few gigahertz up 60 GHz. will show how these...
Light beams can carry orbital angular momentum (OAM) associated to the helicity of their phasefronts.These OAM modes be employed encode information onto a laser beam for transmitting not only in fiber link but also free-space optical (FSO) one.Regarding this latter scenario, FSO communications are considered as an alternative and promising mean complementing traditional many applications where use cable is justified.This next generation communication systems have attracted much interest...
This letter proposes a W-band hybrid photonic wireless link based on commercial small form-factor pluggable (SFP+) module and experimentally demonstrates its performance. Using free running laser as local oscillator heterodyne upconversion, good frequency stability is achieved. Outdoor transmission over 225 m with bit error rate below 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-6</sup> demonstrated, the maximum reach of system typical RF...
Novel duobinary-4-PAM signaling is experimentally demonstrated to support a 4-lane low-latency 400GbE client side solution. Direct detection of 112 Gbps transmission over 5 km single wavelength and polarization fiber link achieved.
We report real-time 4x56.26-Gb/s DWDM PAM-4 transmission over 80-km SSMF with novel optical transmitter sub-assembly comprising multi-wavelength quantum-dot laser and silicon ring modulators. Pre-FEC BERs below 1E-4 are achieved after 80-km, allowing error-free operation HD-FEC.
We report on the generation of combined FSK/IM modulation format by using GCSR tunable laser sources.FSK modulation, up to 100 Mbit/s, has been achieved modulating phase section a source.We experimentally demonstrate at 100Mbit/s and 10 Gbit/s, respectively.We also successful FSK label insertion SOA-MZI wavelength converter.
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Employing the optical frequency multiplication method, theoretical modal bandwidth limitation of multimode fiber (MMF) can be overcome in radio-over-fiber links. The principle is analyzed theoretically and supported experimentally by generation transmission microwave carriers up to 40 GHz 16- 64-level quadrature-amplitude-modulated (QAM) radio signals 24- 30-GHz band over 4.4-km MMF link. </para>
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> We present an integrated and pigtailed add–drop filter based on photonic crystal structures. In the characterization in static regime, insertion losses around 25 dB are successfully overcome with device providing error-free operation for add, drop, multicasting (at 10 Gbit/s) sustaining less than 2.5 of power penalty. also emulate packet switching at Gbit/s employing combination a silicon-wired...