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In the framework of the EU-funded research project “FABULOUS” we experimentally demonstrate an innovative FDMA-PON architecture whose upstream transmission is based on a reflective Mach-Zehnder modulator, reaching an overall upstream capacity of 32 Gbps per wavelength over 31 dB ODN loss in several previously published experiments targeting 1 Gbps per user and using 16-QAM as a modulation format....
We review alternative solutions for optical fronthauling in next generation fixed-mobile converged architectures that try to solve the problems related to the extremely high bit rates required by current fronthauling implementations based on the so-called digitized Radio over Fiber (as for the CPRI or OBSAI standards). In particular, we present our most recent results on Digital Signal Processing...
We propose a fully bidirectional and symmetrical 10 Gb/s on–off keying Passive Optical Network (PON) solution, using the same wavelength in both upstream and downstream directions. Thanks to the remodulation performed by the optical network unit, it is able to transport 20 Gb/s per wavelength using only one optical source for the full network, regardless of the number of users. The system is based...
In this paper we demonstrate the transmission of LTE channels with the DSP-based channel aggregation, for front-hauling applications, over at least a class N1 PON, ranging from EVM=4% for 24 channels up to EVM=8% for 96 channels.
We demonstrate a single-wavelength fully-bidirectional and symmetrical 10 Gbps OOK transmission using simple direct-detection in downstream, and self-coherent detection in upstream over a standard 31 dB loss splitter-based PON, relying on wavelength remodulation.
We demonstrate the possibility of laser sharing, using a multiple-output EDFA, to be adopted by central offices serving multiple PONs, showing compatibility with NG-PON2 standard.
In this paper we evaluate the performance of an optical interconnect configuration based on the wavelength remodulation approach, in order to realize a laser-less node that could allow massive integration in silicon-photonics, making reuse of the downstream wavelength for upstream transmission.
In this paper we speculate about the possibility of introducing master-slave configurations instead of pear-to-pear configurations in the optical-interconnect environment, in order to realize laser-less slave nodes that could allow massive integration in silicon-photonics, making reuse of the downstream wavelength for upstream transmission.
In this paper we present innovative master-slave configurations for optical interconnect, proposing solutions with laser-less slave nodes. Purpose of this activity is to project transceivers able to allow massive integration in silicon photonics.
In this paper we present our final results on the real-time implementation on an FPGA platform of the digital signal processing required in the FDMA-PON architecture studied in the EU project "FABULOUS". ". For the first time, we demonstrated simultaneous upstream and downstream real-time transmission capable of carrying Gigabit Ethernet bidirectional traffic to each ONU.
We investigated the reach increase obtained through non-linearity mitigation by means of transmission symbol rate optimization (SRO). First, we did this theoretically and simulatively. We found that for PM-QPSK systems at full-C-band the reach increase may be substantial, on the order of 10%–25%, with optimum symbol rates on the order of 2-to-6 GBaud. We extended the investigation to PM-16QAM, where...
We present a final demonstration of upstream FDMA-PON transmission on the EU project FABULOUS architecture. We show WDM capability over four wavelengths, each carrying 32 Gbps at 31 dB ODN loss, and DSP real time implementation on a commercial FPGA.
Thanks to the use of a digital multi-subcarrier architecture, we experimentally demonstrate a maximum reach increase of 11% for a 19×128Gbit/s PM-QPSK WDM comb with respect to an equivalent single-subcarrier system, achieving 14,100-km transmission over PSCF fiber with EDFA-only amplification.
In this paper we present the first results obtained with real time data transmission over the upstream data transmission channel realized with discrete components during the FABULOUS UE project, focusing on the architecture of the DSP algorithms implemented on the FPGAs.
This article surveys existing cohesive zone models (CZM) and their use in numerical simulations for analysis impacts on composite structures and predicting the damage induced. These models are used for matrix cracks and delamination. The first part of article gives the required background on failure criteria for predicting the onset of delaminations, on fracture mechanics and the various types of...
This paper investigates the numerical modeling of low velocity impact of composite multilayered plates using the smoothed particle hydrodynamics (SPH) method. Recently the authors developed a shell-based SPH (SSPH) model for the modeling of large deformations of composite multilayered structures, has been extended to the impact modeling. The proposed new shell-based SPH formulation is based on the...
We demonstrate 32 Gbps per wavelength upstream record capacity for a FDMA-PON over 37 km of installed fiber and 32 dB ODN loss, adopting an innovative ONU based on a reflective Mach Zehnder modulator.
We present a self-coherent reflective PON demonstrator, TWDM-PON compatible, running at 10 Gbps upstream bit rate per ONU using commercial DFB lasers, achieving 31 dB ODN loss at BER=10−3 over splitter-based PON in TWDM-like burst mode operation.
We experimentally demonstrate a FDMA-PON system targeting 20 Gbps per wavelength in the upstream, using a real-time FPGA-based transmitter and low-speed baseband DSP, and 39 Gbps in the downstream using a new resources allocation algorithm with 11.5GHz electrical bandwidth, in the framework of the EU research project FABULOUS.
In this paper, we present a new FDMA-PON (Frequency Division Multiple Access — Passive Optical Network) architecture proposed by the FP7 EU STREP project titled “FABULOUS”. The paper is focused on the upstream transmission, based on an innovative reflective optical network unit (R-ONU). A detailed theoretical analysis is first presented and used to optimize the system parameters, then we show the...
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