J. Ichikawa et al., Ti : LiNbO3 waveguide polarizer with a Zn-doped overlayer prepared by liquid-phase epitaxy, APPL PHYS L, 76(12), 2000, pp. 1498-1500
Ti:LiNbO3 waveguide polarizers were obtained by an epitaxial growth of a Zn
-doped LiNbO3 layer on the Ti:LiNbO3 waveguide. The film growth was carried
out by a liquid-phase-epitaxy technique using a Li2O-V2O5 flux. Such an X-
cut waveguide polarizer achieved a TE-mode (extraordinary ray) propagation
with an extinction ratio over 30 dB at a light wavelength of 1.55 mu m. Thi
s technique can be easily applied to Z- and Y-cut waveguide polarizers with
TM- and TE-mode propagation, respectively. (C) 2000 American Institute of
Physics. [S0003-6951(00)02112-4].