Browsing by Subject "Fibres òptiques"
Now showing items 21-40 of 230
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Anàlisi de redundància dels nodes d'una xarxa
(Universitat Politècnica de Catalunya, 2017-01)
Bachelor thesis
Restricted access - author's decision
Covenantee: Xarxa Oberta de CatalunyaThe main goal of this project is to provide redundancy to the nodes of a Network, in this case the Network is owned by Xarxa Oberta de Catalunya. Different aspects will be analyzed with the goal to determine if that node ... -
Análisis del despliegue territorial de la fibra óptica en Catalunya
(Universitat Politècnica de Catalunya, 2013-05-29)
Bachelor thesis
Restricted access - confidentiality agreementLa fibra óptica permite la transmisión de datos mediante la luz que viaja por un medio plástico.Existen diferentes tipologías de fibras ópticas, como monomodo (la señal se propaga en un solomodo) o mutimodo (se propaga en ... -
Application on minimizing residual AM in DPSK UDWDM-PON ONU by integrated dual-EML
(2016-06-01)
Article
Open AccessA monolithically integrated dual electroabsorption modulated laser (DEML), consisting of distributed feedback laser (DFB) and electroabsorption modulator (EAM) sections, is proposed as a transmitter in an optical network ... -
Applying cognitive dynamic learning strategies for margins reduction in operational optical networks
(2020-09-01)
Article
Restricted access - publisher's policyToday's optical transport networks are complex already and the support of the new arising services will further increase such complexity. Traditional deterministic network procedures will need to be revisited, especially ... -
Applying data visualization for failure localization
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyData visualization is applied to BER measures in a bigdata repository. Bubble charts are produced to identify lightpaths with increasing BER and spectrum color maps are then used to identify the most likely degraded link -
Autonomic NFV network services on top of disaggregated optical metro networks
(2019)
Conference report
Restricted access - publisher's policyControl and orchestration of metro network to support dynamic provisioning and reconfiguration of services based on Virtual Network Functions are demonstrated through a CDN example. Interaction among CASTOR MDA, OSM and ... -
Bandwidth assignment criteria against rayleigh backscattering effect in TDM-PON single-fibre wavelength-reuse networks
(IEEE, 2011)
Conference report
Restricted access - publisher's policyIn this paper, theoretical and numerical analysis for Rayleigh Backscattering (RB) in TDM-PON full-duplex single-fiber bidirectional transmission with burst mode upstream and reflective ONU are presented. The results show ... -
Big data analytics in support of virtual network topology adaptability
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyABNO's OAM Handler is extended with big data analytics capabilities to anticipate traffic changes in volume and direction. Predicted traffic is used as input for VNT re-optimization. Experimental assessment is realized on ... -
Building autonomic optical whitebox-based networks
(Institute of Electrical and Electronics Engineers (IEEE), 2018-08-01)
Article
Open AccessDisaggregation at the optical layer is expected to bring benefits to network operators by enriching the offering of available solutions and enabling the deployment of optical nodes that better fit their needs. In this ... -
C plus L band extended reach amplified next generation access networks
(2011-07-20)
Article
Restricted access - publisher's policyThe feasibility of optical amplification solutions for extended reach next generation access networks in C + L bands is studied. Amplification schemes based on Raman fiber amplifier and their combination with remotely ... -
Cancelación del ruido AM en sistemas de transmisión coherentes por fibra óptica: receptor balanceado
(Institución ferial de Madrid (IFEMA), 1988)
Conference report
Open AccessIn this work the authors have studied the AM noise influence over coherent transmission systems employing heterodyne-type detection. A dual-detector optical heterodyne receiver is also studied in arder to eliminate the LO ... -
Capacity quantification of joint-switching-enabled flex- grid/SDM optical backbone networks
(Optical Society of American (OSA), 2017)
Conference report
Open AccessWe quantify the network capacity scaling from 7 to 30 spatial channels. While multifiber provides a 5x capacity increase, MCF limits it to 4x and 2x in national and continental backbone networks, respectively. -
Caracterización estadística del amplificador óptico semiconductor aplicado en un enlace digital por fibra óptica
(Consejo Superior de Investigaciones Científicas (CSIC), 1986)
Conference report
Open AccessIn this paper an statistical model for the semiconductor optical amplifier CSLA) working in linear regime is developped. This model, based on the STT theory, allows the calculation of any number of moments of the statistical ... -
Colorless FDMA-PON with flexible bandwidth allocation and colorless, low-speed ONUs [invited]
(Institute of Electrical and Electronics Engineers (IEEE), 2013-10)
Article
Restricted access - publisher's policyWe demonstrate a remotely seeded flexible passive optical network (PON) with multiple low-speed subscribers but only a single optical line terminal transceiver operating at a data rate of 31.25 Gbits/s. The scheme is based ... -
Concepción, simulación y optimización de dispositivos desplazadores de longitud de onda reflexivos para redes de acceso por fibra óptica (FTTH)
(Universitat Politècnica de Catalunya, 2013-03-01)
Master thesis (pre-Bologna period)
120 months embargo[ANGLÊS] This project presents the design, simulation and optimization of reflective wavelength shifters circuits, with the idea of being implemented in the ONU of subscribers within a passive fiber access network (FTTH). ... -
Control de la polarització de la llum en una xarxa WDM-PON
(Universitat Politècnica de Catalunya, 2015-07)
Master thesis (pre-Bologna period)
Open AccessStudy of control and compensation of the distorion in polarization, introduced by the birefringence of a fiber in a WDM-PON net. -
Core VNT adaptation based on the aggregated metro-flow traffic model prediction
(Optical Society of American (OSA), 2017)
Conference report
Restricted access - publisher's policyAggregation of metro-flow traffic models is proposed to obtain valid core traffic predictive models for core VNT reconfiguration when metro and core networks are independently controlled. Exhaustive simulation results ... -
Damage detection in composite materials structures under variable loads conditions by using fiber Bragg gratings and principal component analysis, involving new unfolding and scaling methods
(2014-06-03)
Article
Restricted access - publisher's policyAn innovative methodology based on the use of fiber Bragg gratings as strain sensors and strain field pattern recognition is proposed for damage detection in composite materials structures. The strain field pattern recognition ... -
Demonstration and field trial of a resilient hybrid NG-PON test-bed
(2014-10-01)
Article
Restricted access - publisher's policyA multi-layer next generation PON prototype has been built and tested, to show the feasibility of extended hybrid DWDM/TDM-XGPON FTTH networks with resilient optically-integrated ring-trees architecture, supporting broadband ... -
Demonstration of a remotely dual-pumped long-reach PON for flexible deployment
(2012-04-01)
Article
Restricted access - publisher's policyWe propose and experimentally demonstrate a flexible wavelength division multiplexing/time division multiplexing network architecture for converged metro-access environment. Entire passiveness in the fiber plant is ...