In this study, a novel nanofiber was fabricated using electrospinning. This nanofiber was composed of Poly (vinyl alcohol) (PVA) and polyethylene glycol (PEG), and was doped with different ratios (0.001, 0.002, 0.003) of CaF2 at room temperature. Optical microscopy images demonstrated a fine and homogeneous dispersion of the nanomaterial within the samples. Scanning Electron Microscopy (SEM) analysis revealed a random distribution of fine fibers in both the polymer blend and doped samples. Prior to the addition of CaF2, the average diameter of the nanofibers was 68.97 nm. Following the addition of CaF2, the average diameters were measured to be 45.76 nm, 68.71 nm, and 98.45 nm for each respective sample. These fibers exhibited a smooth surface. As the concentration of the nanomaterial increased, the transmittance spectra decreased. Concurrently, the extinction coefficient increased with the increasing content of CaF2The values of the dielectric constant (real and imaginary) increased with increasing CaF2 concentrations, and this is attributed to the increase in electrical polarization in the nanofibers due to the contribution of the concentration in the sample, i.e. the increase in charges within the polymers. The Wemple-DiDomenico model was used to derive the dispersion coefficients such as Eo, Ed, no, M-1, and M-3.