Dr Ana Maria Rocha& Dr Gil Fernandes 10 Nov

About the Speaker. Ana Maria Rocha

Ana Maria Rocha received her Ph.D. degree in Physical Engineering from the University of Aveiro, Portugal, 2012 for her work in propagation of high-power signals and fiber fuse effect. Currently, she is a Research Scientist in in Instituto de Telecomunicações in the Optical Components and Subsystems group and collaborate with the Universidade de Aveiro as a lecture. Her area of expertise includes design, production, implementation and characterization of optical fiber devices, Spatial Division Multiplexing system and multicore fibers, optical amplifiers, fiber optics sensors and distributed optical fiber sensors. She has authored or co-authored more than 75 publications, including papers in international peer review journals and conferences, books chapters and patents related to optical sensors and communications.


Components for Multi-Core Fiber Transmission systems based on Long Period Gratings

Multi-core fibers (MCFs) have been proposed to increase the capacity over a single optical fiber by spatial division multiplexing (SDM). However, the realization of a cost and energy efficient SDM transmission systems based on MCF will require the development of several compatible components. Long-period gratings (LPGs) may play a role in the development of efficient and in-line MCF components and LPGs have already been proposed for several applications for optical communications, such as optical filters, gain flatteners and optical couplers. In this talk, we will present our work in developing LPGs based components for SDM MC transmission systems.

About the Speaker. Gil Fernandes

Gil Fernandes received the degree in Physics/Applied Mathematics in 2008 from the University of Porto – Faculdade de Ciências. In December of 2010, he received the M.Sc. in Physics Engineering and, in 2018, the Ph.D. in Electrical Engineering, both from the University of Aveiro, Portugal. During his Ph.D., he developed optical and digital techniques for signal processing in transmission systems with space-division multiplexing. He received the award for the best Ph.D. thesis in Optics and Photonics in 2018 from the Portuguese society of optics and photonics. He has contributed as a member of the principal team in 10+ R&D projects. He has co-authored more than 30 scientific publications in leading international journals and conferences.


Ultra-High Capacity Optical Free-Space Communications

The ever-increasing data rate demand for wireless systems is pushing the physical limits of radiofrequency communications, thus fostering the arising of novel high-capacity optical wireless solutions. This dissemination of optical communication technologies into wireless communications opens up a set of novel opportunities for the development of a new generation of wireless systems providing unprecedented capacity. In this talk, we will review the work carried out on the Instituto the Telecomunicações (IT) on optical wireless transmission delivering bit-rates up to 1 Tbps, leveraged by the use of advanced modulation/coding, digital signal processing, channel estimation, and machine learning techniques, with the aim of supporting the requirements of ultra-high-capacity and reliability of 6G networks [1].


[1] – F. P. Guiomar et al, Coherent Free-Space Optical Communications: Opportunities and Challenges, Journal of Lightwave Technology, Vol. 40, No. 10, pp. 3173 – 3186, May, 2022