Marcin Franczyk received the M.Sc. degree from the Warsaw University of Technology, Warsaw, Poland, in 1999, and the Ph.D. degree in materials science from the Institute of Electronic Materials Technology, Warsaw, Poland, in 2012. In 1998 and 1999, he gained his optoelectronics experience from the Centre for Photonics and Photonic Materials, Bath, U.K., working on manufacturing and characterization of photonic crystal fibers. He is currently an Assistant Professor with the Institute of Microelectronics and Photonics, Warsaw. His current research interests include fiber lasers, large-mode area fibers, and microoptics.