METHOD FOR MAKING PLANAR WAVEGUIDING LIGHT POLARIZER Russian patent published in 1996 - IPC

FIELD: integral and gradient optics. SUBSTANCE: method for making planar waveguiding light polarizer includes producing a flat plate of alkali-bearing oxide glass with optical stress coefficient exceeding 3 Br. Then ion exchange is carried out in melts of alkali metal salts with radius of alkali ions exceeding radius of glass alkali ions with temperature less than glass-transition temperature. Time of treatment is within t₁ up to t₂, where t₁ is time corresponding to start of increasing refraction index, and formation of waveguide layer for TM polarization, t₂ is time corresponding to start of increasing refraction index, and formation of waveguide layer for TE polarization. EFFECT: use of described method provides simplification in making planar waveguide light polarization on glass, increases technological effectiveness when making, and efficiency of polarization selection. 3 dwg