The project is scoped to the research of new types of optical frequency references intended for frequency locking of lasers by spectroscopic methods. These references allows realization of transferable ultra stable optical frequency laser standards, which will serve as a tool for precise characterization of e infrastructure network between CESNET partners (including Institute of Scientific lnstruments, The Czech Academy of Sciences in Brno, CESNET Zikova in Prague, Palacky University in Olomouc, Institute of Photonics and Electronics, The Czech Academy of Sciences in Prague and others).