Progress in Development of Nanostructured Gradient Index Optical Fibers and Micro-Optical Components. - Ryszard Buczynski; Alicja Anuszkiewicz; Adam Filipkowski; Hue Thi Nguyen; Tomasz Stefaniuk; Damian Michalik; Marcin Franczyk; Ryszard Stepien; Dariusz Pysz; Andrew Waddie; Mohammad R. Taghizadeh; Rafal Kasztelanic (ICTON, 2019)