Photochromic properties of copolyethers based on bisphenol-A 4, 4′-dihy-droxydiphenyl, 4, 4′-dihydroxy-azobenzene, and 3,3-bis(chloromethyl)oxetane (BCMO) both embedded in a polymer matrix (polyvinyl alcohol, PVA) and in the pure state, deposed on quartz disks, have been studied. The polarization spectra of the studied compounds have been obtained. From the analysis of the absorption spectra in polarized light, it has been established that the oscillator responsible for the appearance of the electronic absorption band executes vibrations with an average orientation along the stretching direction of the studied foils.