The Optical Communications Group (GCO) is part of the Signal Theory and Communications Department (TSC). Our key research areas involve Optical Fiber Technologies, Raman Spectroscopy and High-Speed Networking.

Our experience is related to optical wavelength domain transport and access networks (WDM, HDWDM, SCM), broadband fiber transmission, sources and receivers, all-optical amplification, optical heterodyne detection, wavelength stabilization and monitoring, transparent WDM network architectures and management, optical linear and non-linear distortions, polarization/PMD treatment and network quality monitoring.

The group is integrated in the Advanced Broadband Communications Centre (CCABA) -CCABA is the acronym of ''Centre de Comunicacions Avançades de Banda Ampla''. The CCABA was set up in January 1994 with the aim of consolidating a multi-disciplinary research group: the Integrated Broadband Communications research group, the Optical Communications, the Radio Communications and the Broadband Communications groups. The UPC supports this research centre and its laboratory was partially funded by the Spanish Education Ministry (CICYT) and by Research Commission of the Catalan Government (CIRIT) under several grants. In the EC IV Framework Programme the UPC participated in the Spanish National Host through the network platform of the CCABA.

The GCO laboratories are fully equipped with broadband instrumentation for WDM and high bit rate opto-electronic system design and characterization, as well as long haul fiber link measurements and IP-ATM-SDH-WDM networking.

Pàgina web del Departament

Recent Submissions

  • Linear array diagnostic from near-field measurements 

    Romeu Robert, Jordi; Jofre Roca, Lluís; Soneira Ferrando, M. José; Clavera, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 1989)
    Conference report
    Open Access
    The authors present an inversion procedure to obtain the current distribution on a linear array from a near-field measurement. Numerical simulations were performed for a 50-element linear array. Single elements are ...
  • 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
    Open Access
    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 ...
  • LIGHTNESS: a function-virtualizable software defined data center network with all-optical circuit/packet switching 

    Saridis, G. M.; Peng, S.; Yan, Yan; Aguado, A.; Guo, B.; Arslan, M.; Jackson, C.; Miao, W.; Calabretta, N.; Agraz Bujan, Fernando; Spadaro, Salvatore; Bernini, G.; Ciulli, N.; Zervas, G.; Nejabati, R.; Simeonidou, D. (2016-04-01)
    Article
    Open Access
    Modern high-performance data centers are responsible for delivering a huge variety of cloud applications to the end-users, which are increasingly pushing the limits of the currently deployed computing and network infrastructure. ...
  • Performance of a FH multilevel FSK for mobile radio in the presence of nonsynchronous users 

    Agustí Comes, Ramon; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 1982)
    Conference report
    Open Access
    This paper considers a Frequency Hopped Multilevel Frequency Shif Keying (FH-MFSK) spread spectrum communication system applied to mobile radio-telephony. We present a mobile-to-base transmission model that allows to study ...
  • Joint content placement and lightpath routing and spectrum assignment in CDNs over elastic optical network scenarios 

    Perelló Muntan, Jordi; Walkowiak, Krzysztof; Klinkowski, Miroslaw; Spadaro, Salvatore; Careglio, Davide (2016-03-01)
    Article
    Restricted access - publisher's policy
    In this work, we address the problem of jointly deciding the placement of the contents delivered by a Content Distribution Network (CDN) among the available data centers, together with the allocation of the lightpaths ...
  • Performance evaluation of an all-optical OCS/OPS-based network for intra-data center connectivity services 

    Pagès Cruz, Albert; Jiménez, Sergio; Perelló Muntan, Jordi; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Open Access
    As the size of Data Centers (DCs) and the amount of information managed by them grows, nowadays electronic-based intra-Data Center Networks (DCNs) start to become a limiting factor, not providing enough scalability nor ...
  • Análisis del sincronismo de portadora mediante series de Volterra 

    Agustí Comes, Ramon; Junyent Giralt, Gabriel (1980)
    Conference report
    Open Access
    Computing the exact carrier phase-jitter delivered from the recovery circuit in a QPSK-TDMA satellite system is cumbersome and has not been sufficiently investigated due to the analytical difficulties with the non linearities. ...
  • Acotación de la probabilidad de error en un sistema de transmisión digital por fibra óptica 

    Agustí Comes, Ramon; Junyent Giralt, Gabriel (1980)
    Conference report
    Open Access
    Dans ce papier, on a obtenu des bornes inférieure et supérieure de la probabilité d 'erreur par symbole dans un systemè de transmission numérique par Fibre Optique. Pour celà, nous avons employé une simplification de la ...
  • LIGHTNESS: a deeply-programmable SDN-enabled data centre network with OCS/OPS Multicast/Unicast switch-over 

    Saridis, JM; Peng, Shpuping; Yan, Yan; Aguado, Alejandro; Buo, Bingli; Arslan, M; Jackson, C; Miao, Wang; Calabretta, Nicola; Agraz Bujan, Fernando; Spadaro, Salvatore; Bernini, Giacomo; Ciulli, Nicola; Zervas, G; Nejabati, Reza; Simeonidou, Dimitra (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    We demonstrate an all-optical dynamic DCN utilizing a fully SDN-enabled data-plane including programmable FPGA-based NICs, offering Network Function Virtualization OCS/OPS driven multicasting for Virtual DC applications ...
  • Experimental demonstration of Flex-Grid udWDM with 6.25GHz full-duplex frequency slots for metro/access & data centers 

    Altabas, Jose Antonio; Izquierdo, David; Sotelo, F; Garcés, I; Lázaro Villa, José Antonio; Lerín de la Santísima Trinidad, Adolfo; Spadaro, Salvatore; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Open Access
    Flex-Grid 6.25GHz full-duplex frequency slots are proposed for Metro/Access & Data-Center Networks allocating: 1Gbps Nyquist-DPSK over MZM for OLT/DC-ONU downlinks and OLT/DC up-downlinks; 1Gbps NRZ-DPSK over directly ...

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