**Meet the editor**

Rastislav Róka was born in Šaľa, Slovakia, on January 27, 1972. He received his MSc and PhD degrees in Telecommunications from the Slovak University of Technology, Bratislava, in 1995 and 2002, respectively. Since 1997, he has been working as a senior lecturer at the Institute of Multimedia Information and Communication Technologies, Faculty of Electrical Engineering and Information

Technology, Slovak University of Technology in Bratislava. Since 2009, he is working as an associate professor at this institute. His teaching and educational activities are realized in areas of fixed transmission media, designing and planning of telecommunication networks, and optocommunication transmission systems. At present, his research activity is focused on the signal transmission through optical transport, metropolitan, and access networks using advanced optical signal processing including various multiplexing, modulation, and encoding techniques. His main effort is dedicated to effective utilization of the optical fiber's transmission capacity of the broadband optical networks by means of dynamic bandwidth and wavelength allocation algorithms applied in various advanced hybrid passive optical network infrastructures.
