Title :
Double ion exchange for high-index waveguides in LiTaO3
Author :
Fedorov, V.A. ; Ganshin, V.A. ; Korkishko, Yu.N. ; Morozova, T.V.
Author_Institution :
Moscow Inst. of Electron. Technol., Russia
Abstract :
The authors describe the fabrication and properties of optical waveguides formed in Y-cut LiTaO3 by simultaneous processing of zinc-lithium, proton-lithium and zinc-proton exchange in the melts K2SO4-Na2SO4-ZnSO4-LiSO4-KHSO4 at 540 degrees C. A surface increase of the refractive index of 0.14 was observed for the extraordinary polarisation and 0.11 for the ordinary polarisation. The dynamics of the process is discussed.
Keywords :
ion exchange; lithium compounds; optical waveguides; optical workshop techniques; refractive index; 540 degC; K 2SO 4-Na 2SO 4-ZnSO 4-LiSO 4-KHSO 4 melts; LiTaO 3; Y-cut; double ion exchange; extraordinary polarisation; high-index waveguides; optical waveguides; ordinary polarisation; refractive index;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921083
