Brillouin scattering in polystyrene thin-film waveguides

An account of Brillouin scattering on thin dip-coated polystyrene waveguides has been given. The behavior of the waveguide near the Bragg region is discussed. The Brillouin scattering observed in dip-coated polystyrene films is attributed to the corrugations in the waveguide due to stress birefringence.