The results of scientific and technological experiments performed in the Glass Department of the Institute of Electronic Materials Technology in Warsaw are presented. Research on fiber optic elements are carried out in areas of light and image guides made of multicomponent glasses and light guides made from pure silica glasses. The laboratory methods of manufacturing the glass elements, which are the starting preforms for optical fibers are elaborated. These methods include selection of the proper chemical composition of glasses, preparation of optimum material batches, melting the glasses in platinum or ceramic crucibles, mechanical working (grinding and polishing) of glass blocks to obtain rods for rod-in-tube preforms. Methods of pulling glass fibers of different cross sections for several medical, technical and environmental applications are improved. A high level of techniques and technological skills in the manufacture of optical fibers make it possible to obtain a higher generation of optical fiber elements and possibly to transmit an image.