Title :
Proton-exchanged optical waveguides in LiNbO/sub 3/ using octanoic acid
Author :
Pun, E.Y.B. ; Tse, Y.O. ; Chung, P.S.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
fDate :
6/1/1991 12:00:00 AM
Abstract :
Low-loss proton-exchanged planar waveguides in z-cut LiNbO/sub 3/ were fabricated and characterized optically using octanoic acid as a proton source. The waveguide exhibited a step-index profile with an index change of 0.118 measured at 0.633 mu m. The lowest waveguide propagation loss measured was 1.2 dB/cm, and it was reduced further to 0.4 dB/cm after annealing. The diffusion rate and the activation energy using this acid were found to be lower than those reported using other acids.<>
Keywords :
ion exchange; lithium compounds; optical waveguides; optical workshop techniques; refractive index; 0.633 micron; LiNbO/sub 3/; activation energy; diffusion rate; low loss proton exchanged planar optical waveguides; octanoic acid; proton source; step-index profile; waveguide propagation loss; z-cut; Annealing; Loss measurement; Optical planar waveguides; Optical refraction; Optical variables control; Optical waveguides; Planar waveguides; Propagation losses; Protons; Refractive index;
Journal_Title :
Photonics Technology Letters, IEEE
