The robust synthesis based on simultaneous optimization of reflectivity of multiple designs located
in a small neighborhood of a pivotal design is presented. Efficiency of this technique is demonstrated
by the synthesis and successful experimental realization of two types of high dispersive mirror. The
first type of fabricated dispersive mirror covers 690-890 nm wavelength range and provides the
dispersion of -300 fs2 at 800 nm. We perform 4 independent coating runs to proof reliability of
robust design method. The second type of mirror provides -4500 fs2 of group delay dispersion in
wavelength range 1027-1033 nm.