Recent Submissions

  • L'art de la falsificació 

    Duran Escribà, Xavier; Ruiz Moreno, Sergio (2015-03)
    Article
    Open Access
    La història de l'art és plena de falsificacions. Ja fos una pràctica per aprendre dels mestres o bé per fer diners, l'art de la còpia va seduir tota mena de pintors. Però a mesura que la falsificació s'ha anat perfeccionant, ...
  • Statistical UDWDM-PONs operating with ONU lasers under limited tunability 

    Sales Zaragoza, Vicente; Segarra Mullerat, Josep; Polo Querol, Víctor; Prat Gomà, Josep Joan (2015-02-01)
    Article
    Open Access
    We explore a new wavelength management for ultradense wavelength division multiplexing- passive optical network with randomly distributed optical network unit (ONU) wavelengths, controlled with limited thermal tunability. ...
  • Differentiation with Raman spectroscopy among several natural ultramarine blues and the synthetic ultramarine blue used by the Catalonian modernist painter Ramon Casas i Carbo 

    Ramos de Torres, Antonio; Ruiz Moreno, Sergio; Lopez Gil, A; Ferrer, Pere; Chillon, M.C (2014-11-01)
    Article
    Restricted access - publisher's policy
    This paper investigates, using only Raman spectroscopy, the spectral differences among the synthetic ultramarine blue (J. B. Guimet) and three natural ultramarine blues (lazurites) corresponding to three lapis lazulis from ...
  • Multipath restoration and bitrate squeezing in SDN-based elastic optical networks [Invited] 

    Paolucci, Francesco; Castro Casales, Alberto; Cugini, Filippo; Velasco Esteban, Luis Domingo; Castoldi, Piero (2014-08-01)
    Article
    Restricted access - publisher's policy
    Sliceable bandwidth-variable transponders (SBVTs) enable the adaptation of transmission parameters according to traffic requirements and network constraints. In this study, SBVTs capabilities are evaluated in the context ...
  • Planning of dynamic virtual optical cloud infrastructures: the GEYSERS approach 

    Tzanakaki, Anna; Anastasopoulos, Markos; Landi, Giada; Bernini, Giacomo; Ciulli, Nicola; Riera, Jordi; Escalona Zorita, Eduard; García Espin, Joan Antoni; Hesselbach Serra, Xavier; Figuerola Fernández, Sergi; Peng, Shuping; Nejabati, Reza; Simeonidou, Dimitra; Parniewicz, Damian; Belter, Bartosz (2014-01-01)
    Article
    Restricted access - publisher's policy
    This article focuses on planning and replanning of virtual infrastructures over optical cloud infrastructures comprising integrated optical network and IT resources. This concept has been developed in the context of the ...
  • Techniques and benefits of energy-aware load-distribution in multi-domain translucent wavelength switched optical networks 

    Pagès Cruz, Albert; Buttaboni, Anna; Maier, Guido; Siracusa, Domenico; Perelló Muntan, Jordi; Spadaro, Salvatore (2014-07-01)
    Article
    Restricted access - publisher's policy
    In this paper, we propose a novel inter-domain connection provisioning mechanism for multi-domain translucent Wavelength Switched Optical Networks. The mechanism can operate in hierarchical and non-hierarchical path ...
  • Using spectrum fragmentation to better allocate time-varying connections in elastic optical networks 

    Sayyad Khodashenas, Pouria; Comellas Colomé, Jaume; Spadaro, Salvatore; Perelló Muntan, Jordi; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2014-05-01)
    Article
    Restricted access - publisher's policy
    Elastic optical network (EON) technology arises as a promising solution for future high-speed optical transport, since it can provide superior flexibility and scalability in the spectrum allocation for seamlessly supporting ...
  • Direct phase modulation DFBs for cost-effective ONU transmitter in udWDM PONs 

    Cano Valadéz, Iván Nicolás; Lerín de la Santísima Trinidad, Adolfo; Polo Querol, Víctor; Pratdesaba Fargas, Josep (2014-05-15)
    Article
    Restricted access - publisher's policy
    A technique for direct phase modulating a low-cost distributed feedback laser is presented for user transmitter in ultra dense wavelength division multiplexing passive optical networks. It consists of a simple RC network, ...
  • Performance evaluation of light-tree schemes in flexgrid optical networks 

    Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (2014-10-01)
    Article
    Restricted access - publisher's policy
    New applications require conveying huge bitrate from a source node to multiple destinations. As a result, point-to-multipoint (P2MP) connections need to be established on the optical layer. In this paper, the P2MP routing ...
  • On the benefits of multi-path recovery in flexgrid optical networks 

    Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (2014-12-01)
    Article
    Restricted access - publisher's policy
    We propose a new recovery scheme, called multi-path recovery (MPR), specifically designed for flexgrid-based optical networks. It combines protection and restoration schemes to jointly recover, in part or totally, the ...

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