GCO - Grup de Comunicacions Òptiques
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.
Collections in this community
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Articles de revista [225]
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Dataset [1]
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Llibres [1]
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Presentacions [1]
Recent Submissions
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Quantifying bypass traffic in partially meshed transparent optical networks
(Springer Nature, 2023-06-28)
Article
Open AccessThis work investigates the transparent bypassing capacity requirements of elastic backbone optical networks to determine the all-optical cross-connection capacity needed at network nodes. Topological parameters have been ... -
Simple single-laser coherent transceiver based on low-cost D-EML for edge networks
(Institute of Electrical and Electronics Engineers (IEEE), 2023-03-15)
Article
Open AccessIn this work we demonstrate single-laser, D-EML based coherent transceivers which transmit and simultaneously receive optical single sideband modulations through a phase noise cancelling scheme, leading to phase-noise and ... -
Demonstration of continuous multiple access with image-rejection coherent receiver and DML transmitters
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Restricted access - publisher's policyWe demonstrate a UD-WDM PON using DML transmitters with multilevel intensity modulation, both in base-band and RF, and a spectrally-efficient heterodyne receiver. We provide comparison with a homodyne receiver. Two users ... -
Distributed and autonomous flow routing based on deep reinforcement learning
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Open AccessA DRL approach with a specific reward function is proposed for autonomous flow routing operating on multilayer scenarios. Illustrative results reveal that the DRL achieves optimal flow routing in terms of cost and service ... -
Data plane technology-agnostic control and orchestration architecture for optical disaggregated data centers
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Restricted access - publisher's policyWe propose a novel SDN control and orchestration architecture to provide composed IaaS over optical disaggregated data centers. We experimentally validate intent-based mechanisms that make the architecture independent from ... -
On the complexity of configuration and orchestration for enabling disaggregated server provisioning in optical composable data centers
(Optical Society of American (OSA), 2022-12-01)
Article
Open AccessDue to the limitations of traditional data center (DC) architectures, the concept of infrastructure disaggregation has been proposed. DC resources are separated into multiple blades to be exploited independently. As a ... -
Single sideband techniques for next generation low-cost UD-WDM coherent PONs
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Restricted access - publisher's policyTwo applications for splitter-based, coherent passive optical networks are investigated. Coherent technologies enable ultra-dense wavelength division multiplexing, increasing the dedicated data rates per application, the ... -
OCATA: A deep-learning-based digital twin for the optical time domain
(Optical Society of American (OSA), 2023-02-01)
Article
Restricted access - publisher's policyThe development of digital twins to represent the optical transport network might enable multiple applications for network operation, including automation and fault management. In this work, we propose a deep-learning-based ... -
Supporting heterogenous traffic on top of point-to-multipoint light-trees †
(2023-02-23)
Article
Open AccessNew 5 G and beyond services demand innovative solutions in optical transport to increase efficiency and flexibility and reduce capital (CAPEX) and operational (OPEX) expenditures to support heterogeneous and dynamic traffic. ... -
Quantum bit retransmission using universal quantum copying machine
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Open AccessQuantum internet, which is expected to be a combination of quantum and classical networks, promises to provide information-theoretic security for data exchange. Classical networks have well-established protocols for reliable ... -
Dual time and frequency domain optical layer digital twin
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Open AccessWe demonstrate a digital twin for failure detection in optical networks. Artificial neural networks-based models for optical constellation analysis enable predicting the transmitted signal in the time domain whereas ... -
Multi-agent-based dynamic optical subcarrier allocation for near real-time P2MP operation
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Open AccessWe propose a multi-agent system (MAS) to manage subcarrier allocation in point-to-multipoint connectivity based on Digital Subcarrier Multiplexing. Similar performance to a centralized approach is shown, which allows for ...
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