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

Enviaments recents

  • A novel methodology for measuring coherent homowavelength crosstalk in an optical signal supervisory system 

    Rafel Porti, Alberto; Prat Gomà, Josep Joan; Sales Zaragoza, Vicente (Optical Society of America, 1999)
    Text en actes de congrés
    Accés obert
    We present a novel, easy, and cost-effective methodology that allows an optical signal supervisory system the detection, isolation, and measurement of the coherent homowavelength crosstalk within an optical node. It also ...
  • First demonstration and field trial on multi-user UDWDM-PON full duplex PSK-PSK with single monolithic integrated dual-output-DFB-SOA based ONUs 

    Chu, Guang Yong; Maho, Anaelle; Cano Valadez, Iván Nicolás; Polo Querol, Víctor; Brenot, Romain; Debregeas, Helene; Prat Gomà, Josep Joan (2016-10-15)
    Article
    Accés obert
    We demonstrate a monolithically integrated dual-output DFB-SOA, and conduct the field trial on a multi-user bidirectional coherent ultradense wavelength division multiplexing-passive optical network (UDWDM-PON). To the ...
  • Optimal VDC service provisioning in optically interconnected disaggregated data centers 

    Pagès Cruz, Albert; Perelló Muntan, Jordi; Agraz Bujan, Fernando; Spadaro, Salvatore (2016-07)
    Article
    Accés obert
    Virtual data center (VDC) is a key service in modern data center (DC) infrastructures. However, the rigid architecture of traditional servers inside DCs may lead to blocking situations when deploying VDC instances. To ...
  • Optical monitoring system for scalable all-optical networks 

    Amrani, Abdelhafid; Roldán Andrade, Jesús; Junyent Giralt, Gabriel (THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, INC., 1997)
    Text en actes de congrés
    Accés obert
    High traffic and high capacity communications are believed to become cost-effective with the use of all-optical networks based on OFDM (optical frequency division multiplexing). In such networks, new strategies for OA and ...
  • 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. ...

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