Title :
Sol-gel derived WO3 coatings on Ti:LiNbO3 optical waveguide for gas sensing
Author :
Chen, Z.H. ; Ma, X. ; Sun, H.T. ; Wlodarski, W. ; Austin, M.
Author_Institution :
Dept. of Commun. & Electr. Eng., R. Melbourne Inst. of Technol., Vic., Australia
Abstract :
WO3 coatings on Ti:LiNbO3 optical waveguides have been prepared from tungsten ethoxide by a sol-gel method. The annealed coatings display a triclinic perovskite crystalline structure determined by X-ray diffraction. Optical tests show that output power of the straight line waveguide decreases after deposition of the coatings (from 62 μW to 25 μW in the presence of saturated ethanol vapour)
Keywords :
X-ray diffraction; annealing; gas sensors; optical films; optical sensors; optical testing; optical waveguides; sol-gel processing; titanium; tungsten compounds; 62 to 25 muW; LiNbO3:Ti; Ti:LiNbO3 optical waveguide; WO3; WO3 coatings; X-ray diffraction; annealed coatings; gas sensing; optical sensor; optical tests; output power; saturated ethanol vapour; sol-gel method; straight line waveguide; triclinic perovskite crystalline structure; tungsten ethoxide; Annealing; Coatings; Crystallization; Displays; Optical diffraction; Optical saturation; Optical waveguides; Testing; Tungsten; X-ray diffraction;
Conference_Titel :
Optoelectronic and Microelectronic Materials And Devices Proceedings, 1996 Conference on
Conference_Location :
Canberra, ACT
Print_ISBN :
0-7803-3374-8
DOI :
10.1109/COMMAD.1996.610173
