Josep M. Fàbrega


Packet Optical Networks and Services (PONS)

Phd , Researcher (R3)

Phone: +34 93 645 29 00

Josep Mª Fabrega Sanchez obtained the BSc and MSc degrees in telecommunications engineering from Universitat Politecnica de Catalunya (UPC-BarcelonaTech) in 2002 and 2006, respective. In 2010, he obtained the PhD in signal theory and communications from UPC-BarcelonaTech, specializing in fiber-optic transmission systems.

During 2004-2010 he was R&D engineer in the optical communications group of UPC-BarcelonaTech, where he carried out the PhD. In 2010 he joined the optical networks and systems (ONS) department of CTTC as post-doctoral researcher. In November 2012 he was upgraded to become permanent researcher of the same department. In March 2017 he was promoted to a senior researcher position of the ONS department of CTTC.

Nowadays, he has more than 15 years of experience in optical subsystems R&D. His specialization is on optical transmission systems, not only from the design and modeling perspective, but also counting on an extensive laboratory experience. Therefore, he has contributed to and demonstrated new modulation formats, subsystems and transceiver concepts specifically designed for different applications and network segments, including core, aggregation and access.

Participation in projects and industrial grants

Since 2005 he has actively participated in over 21 R&D projects funded by the European Commission’s Framework Programmes (H2020, FP7, FP6) and the Spanish National research programmes (Proyecto I+D, Red Temática, CENIT, CYCIT). Additionally, he has been the CTTC researcher in charge of two public projects (H2020 INT5GENT and Red Temática PIC4TB).

He also has participated in 6 different projects for technology valuation and transfer to the industry, leading those 4 with CERCA institution (Barcelona, ES), ECrowd! (Barcelona, ES), KDDI R&D (Saitama, JP), and AST&Science (Miami, USA).

Training activities

(Co-)directed 3 PhD theses (1 ongoing) and 14 BSc/MSc theses, all of them dealing with different aspects of fiber optic communication transmission systems.

Author of 4 different didactic materials for subjects related to optical communication systems and networks, in the framework of different Master degrees.

Delivery of specialized talks in technical schools, workshops and events related to projects (e.g. H2020 ONFIRE, Red Temática PIC4TB).

Dissemination and outreach

Author of 53 publications and coauthor of another 124 publications, including international journals (36, 19 of them in Q1), conferences (130, 34 of them invited papers) and patent families (2), covering theoretical and practical aspects of transmission devices and systems for fiber optic communications.

Delivery of talks related to photonics and optical networks in outreach activities such as the Catalan Science Week.

Google Scholar (as of July 2020) Citations: 1647. h-index 19, i10-index 42


Membership of Scientific Societies

IEEE Member since 2005, becoming a Senior Member on 2017

IEEE Photonics Society Member since 2008

OSA Member during 2007-2013

Organization of Events

Publication Chair of IEEE/IFIP Optical Networks Design and Modelling (ONDM) 2020

Organizer of the Workshop “Disaggregated Optical Networks: hype, huge potential or somewhere in the middle?” held at IEEE/IFIP Optical Networks Design and Modelling (ONDM) 2020

Member of the local organizing committee of the IEEE ComSoc Autumn School 2019

Session chair of the International Conference on Transparent Optical Networks (ICTON) 2019

Organizer of the Workshop “Photonic Technologies for 5G and Beyond” held at European Conference on Networks and Communications (EUCNC) 2019

TPC member of the European Conference on Networks and Communications (EUCNC) 2019

Organizer of the “2nd Workshop on Photonic Integrated Circuits for Telecom & Bio / Life Sciences” 2017

Web chair at the 39th Meeting of Wireless World Research Forum 2017

Session chair of the International Conference on Transparent Optical Networks (ICTON) 2014

Fellowships and Awards

Torres Quevedo Fellowship, Spanish Ministry of Science and Technology, 2011.

Recipient of the EuroFOS Best Student Research Award, for my PhD Thesis “Homodyne OLT-ONU Design for Access Optical Networks”, 2010.

Best Student Paper Award Semi-finalist at the Optical Fiber Communication (OFC) Conference 2010 for the paper: J. M. Fabrega, A. El Mardini, V. Polo, J. A. Lázaro, E. T. Lopez, R. Soila, J. Prat, “Deployment analysis of TDM/WDM Single Fiber PON with Colourless ONU Operating at 2.5 Gbps Subcarrier Multiplexed Downstream and 1.25 Gbps Upstream,” paper NWB5

PTA R&D Engineering Fellowship, Spanish Ministry of Science and Technology, 2007-2010.

Commissions of Trust

Served as member of 3 Ph.D. thesis committees

Reviewer of top-leading journals and magazines in the field such as IEEE/OSA journal of Lightwave Technology (JLT), OSA Optics Express (OE), IEEE/OSA Journal of Optical Communications and Networking (JOCN), IEEE Photonics Technology Letters, and OSA Optics Letters (OL)


Elected member of board of stakeholders of Photonics21 European Technology Platform since 2018, contributing to the definition of future research topics in the European research area.

Filter Features Extraction from Optical Spectra
2020 European Conference On Optical Communications, Ecoc 2020. April 2021.
Locatelli F., Christodoulopoulos K., Fabrega J.M., Moreolo M.S., Nadal L., Spadaro S.
10.1109/ECOC48923.2020.9333342 Google Scholar
Experimental Demonstration of Dynamic Optical Beamforming for beyond 5G Spatially Multiplexed Fronthaul Networks
Munoz R., Rommel S., Van Dijk P., Brenes J., Grivas E., Manso C., Roeloffzen C., Vilalta R., Fabrega J.M., Landi G., Casellas R., Martinez R., Monroy I.T.
10.1109/JSTQE.2021.3079726 Google Scholar
Spectral processing techniques for efficient monitoring in optical networks
Journal of Optical Communications and Networking. Vol 13. No. 7. pp. 158-168 January 2021.
Locatelli F., Christodoulopoulos K., Svaluto Moreolo M., Fabrega J.M., Nadal L., Spadaro S.
10.1364/JOCN.418800 Google Scholar
Programmable disaggregated multi-dimensional S-BVT as an enabler for high capacity optical metro networks
Journal of Optical Communications and Networking. Vol 13. No. 6. pp. 31-40 January 2021.
Nadal L., Fabrega J.M., Moreolo M.S., Vilchez F.J., Casellas R., Munoz R., Vilalta R., Martinez R.
10.1364/JOCN.417766 Google Scholar
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Researcher R2
Researcher R2
Researcher R3