An optical nanocomposite material has a nanoparticulate filler dispersed in a
host plastic material. According to the method of making the nanocomposite material,
a predetermined temperature sensitive optical vector, such as refractive index,
of the plastic host material and nanoparticulate filler are directionally opposed
resulting in a nanocomposite material having significantly improved stability of
the refractive index with respect to temperature.