Enviaments recents

  • Experimental demostration of an all-fiber polarization controller based on faraday rotation 

    Prat Gomà, Josep Joan; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (1995-12)
    Article
    Accés obert
    An all-fiber device for the control of the state of polarization (SOP) is presented. The controller is high speed (its time response is less than 50 ms in the worst case), low loss (insertion losses are 2.5 dB independently ...
  • Practical method for modelling the nonlinear behaviour of a travelling wave semiconductor optical amplifier 

    Ruiz Moreno, Sergio; Guitart Felip, Jorge (1993-02)
    Article
    Accés obert
    The authors present a simple model of a travelling wave semiconductor optical amplifier with an appreciable degree of saturation. The model uses a particular way of linearising the total carrier recombination R(N) to find ...
  • Strict calculation of the light statistics at the output of a travelling wave optical amplifier 

    Guitart Felip, Jorge; Ruiz Moreno, Sergio (Institution of Electrical Engineers, 1993-08)
    Article
    Accés obert
    A new method for calculating the probability density function of the photon number propagating through a travelling wave optical amplifier with no restriction on its working regime (linear and nonlinear) is reported. The ...
  • Application on minimizing residual AM in DPSK UDWDM-PON ONU by integrated dual-EML 

    Chu Guang, Yong; Cano Valadéz, Iván Nicolás; Polo Querol, Víctor; Prat, Josep (2016-06-01)
    Article
    Accés obert
    A 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 ...
  • Flex-Grid/SDM backbone network design with inter-core XT-limited transmission reach 

    Perelló Muntan, Jordi; Gene Bernaus, Joan M.; Pagès Cruz, Albert; Lázaro Villa, José Antonio; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2016-08-01)
    Article
    Accés restringit per política de l'editorial
    Spatial division multiplexing (SDM) has been presented as a key solution to circumvent the nonlinear Shannon limit of standard single-core fibers. To implement SDM, multi-core fiber (MCF) technology becomes a top candidate ...
  • Big Data-backed video distribution in the telecom cloud 

    Ruiz Ramírez, Marc; Germán Duarte, Martín; Contreras, Luis Miguel; Velasco Esteban, Luis Domingo (2016-06-15)
    Article
    Accés restringit per política de l'editorial
    Telecom operators are starting the deployment of Content Delivery Networks (CDN) to better control and manage video contents injected into the network. Cache nodes placed close to end users can manage contents and adapt ...
  • Experimental demonstration of multi-vendor and multi-domain elastic optical network with data and control interoperability over a pan-european test-bed 

    González de Dios, Oscar; Casellas Regi, Ramón; Paolucci, Francesco; Napoli, Antonio; Gifre Renom, Lluís; Dupas, Arnaud; Hugues Salas, Emilio; Morro, Roberto; Belotti, Sergio; Meloni, Gianluca; Rahman, Talha; López Álvarez, Victor; Martínez Rivera, Ricardo Victor; Fresi, Francesco; Bohn, Marc; Yan, Shuangyi; Velasco Esteban, Luis Domingo; Layec, Patricia; Fernández Palacios, Juan Pedro (2016-04-01)
    Article
    Accés obert
    The operation of multidomain and multivendor EONs can be achieved by interoperable sliceable bandwidth variable transponders (S-BVTs), a GMPLS/BGP-LS-based control plane, and a planning tool. The control plane is extended ...
  • Signal to noise ratio in nonlinear optical amplification process 

    Soneira Ferrando, M. José; Ruiz Moreno, Sergio (1990-01)
    Article
    Accés obert
    In this communication, one looks at the influence of the saturation process over the statistical fluctuations (signal to noise ratio) of the optical power at the output of a travelling wave semiconductor optical amplifier ...
  • Optimum carrier to signal power ratio for remote heterodyne DD-OFDM in PONs 

    Cano Valadéz, Iván Nicolás; Santos Blanco, M. Concepción; Prat Gomà, Josep Joan (2013-07)
    Article
    Accés restringit per política de l'editorial
    The carrier to signal power ratio (CSPR) in a directdetection optical orthogonal frequency division multiplexing (OFDM) system based on remote heterodyne scheme is optimized in a passive optical network (PON) downlink. ...
  • Restoration in optical cloud networks with relocation and services differentiation 

    Natalino da Silva, Carlos; Wosinska, Lena; Spadaro, Salvatore; Costa, J. C. W. A.; Frances, Carlos; Monti, Paolo (Institute of Electrical and Electronics Engineers (IEEE), 2016-02-01)
    Article
    Accés obert
    Optical cloud networks allow for the integrated management of both optical and IT resources. In this paradigm, cloud services can be provisioned in an anycast fashion; i.e., only the source node asking for a service is ...

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