Talk 3
IX Workshop of Probability and Statistics group
CIDMA- University of Aveiro
Speaker: Fernando Guiomar - IT, University of Aveiro
Title of the talk: Approaching the Capacity Limits of Optical Fiber Systems Through Probabilistic Constellation Shaping Modulation
Abstract: Optical fiber systems are nowadays the key technology that supports high-speed internet. In particular, inter-continental fiber links are at the core of the global network, and therefore experience a tremendous pressure in terms of required information capacity. These trans-oceanic fiber systems are typically connected via submarine cables that can exceed 5000 km in length, and thus require an exceptional investment for their deployment. Therefore, it is imperative to maximize their communication efficiency, in order to enable the transmission of hundreds of Terabits/s with the lowest possible energy consumption. In this talk, we will review the most recent advances on the development of efficient data modulation and digital signal techniques that are currently being implemented for the next-generation of optical fiber systems. In particular, we will focus on the mathematical formulation that drives the design of optimal transmission systems employing advanced modulation based on the concept of probabilistic constellation shaping.Fernando Guiomar, received the M.Sc. and Ph.D. degrees in Electronics and Telecommunications Engineering from University of Aveiro, Portugal, in 2009 and 2015, respectively. In 2015, he has received a Marie Skłodowska-Curie individual fellowship, jointly hosted by Politecnico di Torino, Italy, and CISCO Optical GmbH, Nuremberg. In 2016, he has received the Photonics21 Student Innovation Award, distinguishing industrial-oriented research with high impact in Europe. In 2017, he has joined Instituto de Telecomunicações - Aveiro as an assistant researcher responsible for the national research infrastructure ORCIP, aimed at the testing and prototyping of future 5G solutions involving novel optical and radio technologies. In 2020, he was awarded a 3-year research contract by the “la Caixa” Foundation, within the framework of the highly competitive Postdoctoral Junior Leader Fellowship program (ID 100010434). His main research interests are focused within the area of fiber-based and free-space optical communication systems, including the development of digital signal processing algorithms, advanced modulation and coding, constellation shaping and nonlinear modelling and mitigation. Fernando Guiomar is an IEEE and OSA member and he has authored or co-authored more than 90 scientific publications in leading international journals and conferences.