Interest in the area of optoelectronics stimulates the potential applications in the last few years. Optical waveguides are the potential candidates for integrated optical devices such as wavelength division multiplexing, the power splitter-combiner, optical filter and sensing applications also. In order to design optical waveguide components, waveguiding region should have specific index of refraction. Due to non-availability of sufficient number of suitable high quality materials with proper refractive index for particular application, there is a need of tailoring the materials of proper refractive index. In the present work, planar optical waveguides of co-exchanged Ag+ and K+ are fabricated by thermal ion exchange process. The structural properties are studied by XRD and EDAX and the optical transmission losses are measured by prism coupling technique are reported.
