Ara es mostren els items 4-12 de 12

  • Evaluation of the impact of different SDM switching strategies in a network planning scenario 

    Shariati, Behnam; Sayyad Khodashenas, Pouria; Rivas Moscoso, José Manuel; Ben Ezra, Shalva; Klonidis, Dimitrios; Jiménez, Felipe; Velasco Esteban, Luis Domingo; Tomkos, Ioannis (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    We compare SDM joint and independent switching strategies in a planning scenario involving a European backbone network. Joint switching can achieve cost savings of 40-50% with a performance similar to that of independent ...
  • Experimental evaluation and improvement methods for low cost transmitters in long reach PONs 

    Chatzi, Sotiria; Klonidis, Dimitrios; Tsekrekos, Christos P.; Lázaro Villa, José Antonio; Prat Gomà, Josep Joan; Tomkos, Ioannis (2013-12)
    Article
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    In this paper, we first analyze the degradation stochastic resonance (DSR) effect in the context of adaptive averaging (AD-AVG) architectures. The AD-AVG is the adaptive version of the well-known AVG architecture . It is ...
  • Impact of filter sharpness on the performance of elastic optical networks 

    Sayyad Kodashenas, Pouria; Rivas Moscoso, José Manuel; Klonidis, Dimitrios; Tomkos, Ioannis; Behnam Shariati, Mohammad; Comellas Colomé, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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    Elastic optical network (EON) technology arises as a promising solution for future high-speed optical transport networks, inasmuch as it can provide superior flexibility and scalability in the spectrum allocation for ...
  • Investigation of mid-term network migration scenarios comparing multi-band and multifiber deployments 

    Shariati, Behnam; Sayyad Khodashenas, Pouria; Rivas Moscoso, José Manuel; Ben Ezra, Shalva; Klonidis, Dimitrios; Jiménez, Felipe; Velasco Esteban, Luis Domingo; Tomkos, Ioannis (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    We compared two different mid-term migration scenarios for core network capacity scaling, realized using either multi-band or multi-fiber systems. We show, under realistic assumptions of current costs, that the multi-fiber ...
  • Optical subsystems for next generation access networks 

    Lázaro Villa, José Antonio; Polo Querol, Víctor; Schrenk, Bernhard; Bonada Bo, Francesc; Cano Valadéz, Iván Nicolás; López Pastor, Eduardo Tommy; Kazmierski, Christophe; de Valicourt, Guilhem; Brenot, Romain; Bauwelinck, Johan; Xing-Zhi, Qiu; Ossieur, P.; Forzati, Marco; Rigole, Jean-Pierre; Monroy, I.T; Tangdiongga, E.; Morant, Maryland; Nicolau, L.; Teixeira, A.L.; Erasme, D.; Klonidis, Dimitrios; Tomkos, Ioannis; Prat Gomà, Josep Joan; Kouloumentas,, Christos; Avramopoulos, Hércules (2011)
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    Recent optical technologies are providing higher flexibility to next generation access networks: on the one hand, providing progressive FTTx and specifically FTTH deployment, progressively shortening the copper access ...
  • Options for cost-effective capacity upgrades in backbone optical networks 

    Shariati, Behnam; Rivas Moscoso, José Manuel; Klonidis, Dimitrios; Tomkos, Ioannis; Ben Ezra, Shalva; Jiménez, Felipe; Marom, Dan M.; Sayyad Khodashenas, Pouria; Comellas Colomé, Jaume; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Upgrading the capacity of backbone optical networks while delivering contents to the end-users with a reduced cost per bit is a day-by-day challenge of network operators. In this paper, we first discuss several mid-term ...
  • Simple intradyne PSK system for UDWDM-PON 

    Prat Gomà, Josep Joan; Polo Querol, Víctor; Zakynthinos, P.; Cano Valadéz, Iván Nicolás; Tabares, J.; Fàbrega Sánchez, Josep Maria; Klonidis, Dimitrios; Tomkos, Ioannis (2012-12-17)
    Article
    Accés obert
    A homodyne coherent receiver for ultra-dense WDM-PON with off the shelf components is presented. It consists of a conventional DFB, phase switched clock signal, an optical coupler instead of a 90º hybrid, balanced ...
  • Test-bed functionality of the SARDANA hybrid NG-PON 

    Prat Gomà, Josep Joan; Polo Querol, Víctor; Lázaro Villa, José Antonio; Bonada, F.; López Pastor, Eduardo Tommy; Schrenk, Bernhard; Omella, M.; Saliou, F.; Le, Q.T.; Chanclou, P.; Leino, D.; Soila, R.; Spirou, S.; Costa, L.; Teixeira, A.; Tosi-Beleffi, G.M.; Klonidis, Dimitrios; Tomkos, Ioannis (2011)
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    The tests with broadband multimedia services of the SARDANA multi-layer prototype prove the feasibility of scalable hybrid DWDM/TDM-PON FTTH networks with resilient optically-integrated ring-trees architecture.
  • Wavelength-tuneable remote node for enhanced resilience and optimization of WDM access networks 

    Lázaro Villa, José Antonio; Bonada Bo, Francesc; Schrenk, Bernhard; Costa, Liliana; Teixeira, Marco Antonio; Chatzi, Sotiria; Klonidis, Dimitrios; Tomkos, Ioannis; Prat Gomà, Josep Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
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    A remote node design with a wavelength tuneable optical add/drop element is presented and experimentally demonstrated for application in a resilient ring+tree access network architecture. The flexibility of the network ...