Enviaments recents

  • 1Gbps full-duplex links for ultra-dense-WDM 6.25GHz frequency slots in optical metro-access networks 

    Altabas, Jose Antonio; Izquierdo, David; Lázaro Villa, José Antonio; Lerin, Adolfo; Sotelo, Félix; Garces, Ignacio (2016-01-11)
    Article
    Accés obert
    1Gbps full-duplex optical links for 6.25GHz ultra dense WDM frequency slots are demonstrated and optimized for cost-effective metro-access networks. The OLT-ONU downlinks are based on 1Gbps Nyquist-DPSK using MZM and ...
  • Coherent ONU based on 850 µm-long cavity-RSOA for next-generation ultra-dense access network 

    Chu, Guang Yong; Lerin, Adolfo; Cano Valadez, Iván Nicolás; Polo Querol, Víctor; Prat, Josep (2016-05-10)
    Article
    Accés obert
    In this Letter, an efficient bidirectional differential phase-shift keying (DPSK)-DPSK transmission for a ultradense wavelength division-multiplexed passive optical network is proposed. A single distributed feedback laser ...
  • Technologies for cost-effective udWDM-PONs 

    Prat Gomà, Josep Joan; Cano Valadez, Iván Nicolás; Presi, Marco; Tomkos, Ioannis; Klonidis, Dimitrios; Vall-llosera, Gema; Brenot, Romain; Pous, R.; Papastergiou, george; Rafel, Albert; Ciaramella, Ernesto (2016-01-15)
    Article
    Accés obert
    New technologies for ultradense WDM-PON (udWDM-PON), enabled by coherent techniques and low-cost devices, are developed for an efficient utilization of the optical spectrum, revealing that the “Wavelength-to-the-User” ...
  • Automatic classification system of Raman spectra applied to pigments analysis 

    González Vidal, Juan José; Pérez Pueyo, Rosanna; Soneira Ferrando, M. José (2016-12-01)
    Article
    Accés obert
    Raman spectroscopy is one of the few non-destructive techniques capable of identifying pigments in art works. Raman spectra contain powerful information that can be used to identify unknown compounds and their chemical ...
  • Cost-effective transceiver based on an RSOA and a VCSEL for flexible uDWDM networks 

    Altabas, Jose Antonio; Izquierdo, David; Lázaro Villa, José Antonio; Garces, Ignacio (2016-05-15)
    Article
    Accés obert
    A cost-effective transceiver for a 1-Gb/s full-duplex ultra-dense wavelength division multiplexing optical link is proposed for flexible metro-access and 5G networks. The transceiver is based on a vertical cavity surface ...
  • UDWDM-PON using low-cost coherent transceivers with limited tunability and heuristic DWA 

    Sales Zaragoza, Vicente; Segarra Mullerat, Josep; Polo Querol, Víctor; Velásquez Micolta, Juan Camilo; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2016-08-01)
    Article
    Accés obert
    A new Passive Optical Network (PON) for access, making use of Ultra Dense Wavelength Division Multiplexing (UDWDM) by densely spacing channels at few GHz, and introducing the “wavelength-to-the-user” concept, is proposed. ...
  • Chirp-based direct phase modulation of VCSELs for cost-effective transceivers 

    Altabas, Jose Antonio; Izquierdo, David; Lázaro Villa, José Antonio; Garces, Ignacio (2017-02-01)
    Article
    Accés restringit per política de l'editorial
    A 2.5Gb/s DPSK transmitter based on direct phase modulation of a VCSEL using its own chirp is proposed. The VCSEL, which wavelength is 1539.84nm, has been characterized both static and dynamically. The sensitivity of a ...
  • Ultrafast wavelength jumping and wavelength adjustment with low current using monolithically integrated FML for long-reach UDWDM-PON 

    Chu, Guang Yong; Prat Gomà, Josep Joan (2016-12-07)
    Article
    Accés obert
    Ultrafast wavelength jumping at optical network units (ONUs) for an access network with frequency modulated lasers (FMLs) is demonstrated. This FML consists of an intracavity tunable phase section and filtering gain section. ...
  • Dynamic virtual network connectivity services to support C-RAN backhauling 

    Asensio García, Adrián; Ruiz Ramírez, Marc; Contreras Murillo, Luis Miguel; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2016-12-01)
    Article
    Accés restringit per política de l'editorial
    Aiming at satisfying in a cost-effective manner the forecast traffic growth that future mobile networks will need to support, traditional distributed Radio Access Networks (RANs) are evolving towards centralized architectures. ...
  • Brokered orchestration for end-to-end service provisioning across heterogeneous multi-operator (Multi-AS) optical networks 

    Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Gifre Renom, Lluís; Chen, Cen; Yin, Jie; Zhu, Zuqing; Proietti, Roberto; Yoo, Sung-Joo Ben (2016-12-01)
    Article
    Accés obert
    This paper proposes a new networking paradigm introducing the broker-plane above the management planes of Autonomous Systems (ASes). The brokers communicate with the manager of each AS to assist coordinate end-to-end ...

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