In most experimental installations and prototypes of miniature (the largest size of the sensing element from hundreds of μm to 2 cm) optical gyros, the waveguide passive ring resonators are used as sensing elements. In this case, only singlemode waveguides are used, since the use of multimode waveguides is impossible due to the dispersion of modes. For the same reason, most nonplanar ring resonators cannot be used. Nevertheless, there are confocal configurations of the ring resonators with strongly degenerate and equidistant spectrum. The application of such configurations as sensing elements allows to avoid the negative effect of the mode dispersion. Replacing the waveguide ring resonator on the confocal one can give some advantages for some types of miniature optical gyros (for example, those using the phase characteristic of a passive ring resonator). This work is devoted to the analysis of these optical gyros types and the advantages that the use of ring confocal resonator can give.