Characterisation of electric field assisted diffused potassium ion planar optical waveguides

A simple drift transport model is used to predict the depth of planar optical waveguides produced by the electric field assisted ion exchange of potassium ions into soda-lime glass. The guide depth can be represented by a simple universal function of the voltage-process time product. The model is fitted to experimental data over a wide range of applied potentials and times. Joule heating effects limit the accuracy of the model at large current densities