doc. Ing. Leoš Boháč, Ph.D.

The dissertation will strive to find innovative principles of high-speed optical signal transmission and routing in optical networks of the future. The particular interest is in a full optical routing, light-light manipulation (routing), efficient wavelength multiplexing and light-path establishment in Flexgrid architectures, optical burst switching, optical slow light technology to make optical memory reality, optical routing protocols, cost efficient inter-datacenter optical infrastructures and routing, full virtualization at an optical domain, the optical quantum cryptography, the multicore and few-mode fibers and systems, etc. https://comtel.fel.cvut.cz/cs/users/bohac

The aim of the dissertation is to analyze the requirements of finding new security tools for future information networks and systems. Based on today's very rapid development in area of distributed sensor systems, Internet of Things, SmartGrid, Data centers, Human Body networks, etc., the invasive penetration of information technology of all kinds can be distinctly expected in these areas of our live where until recently their deployment was not directly conceivable. Foreseen large-scale use of teeny dispersible sensors and actuators (SmartGrid) opens a new brand space for a security reviews since in this case the security is not only a matter of possible assault and abuse of data as such but more critically the breach may have a significant and almost immediate impact on the activities of people and society, particularly when actuators do not correctly function as they should because there are hacked. Information networks of the future will have much broader opportunity to influence functioning of society in both good and bad sense due to the large computing capacity of data centers, access to still larger set of data even in real time and also due to a direct access to actuators. And just for this reason it is more than necessary to focus our efforts on completely new tools and principles to ensure this type of integrated security globally. https://comtel.fel.cvut.cz/cs/users/bohac

The aim of this thesis is to assess the current performance of the Internet and confront these findings with the development and the needs of novel services and concepts such as sensor networks, invasive virtualization, SmartGrid, Internet of things, mobile networks, etc. In the work the new principles facilitating implementation of the above mentioned novel services will be determined. https://comtel.fel.cvut.cz/cs/users/bohac

The aim of this work is to theoretically investigate the possibility of new systems and optical fiber waveguides simultaneously applicable both to the telecommunication technology and optical sensors. In the future, it is expected that optical fibers and systems will have a significant advantage in the field of telecommunications. It is therefore a logical step to complement these systems with advanced optical sensors capable measuring various physical quantities as vibration, optically detected acoustic signals, strains a stresses in the constructions, etc. The key of this research is to focus on optical sensors particularly integrated with optical fibres and systems used in parallel also for classical transmission of data. And even more, the work has to concentrate also more on the research of the distributed class of optical fibre sensors and planar optical waveguides. https://comtel.fel.cvut.cz/cs/users/bohac