CALCULATION OF CONCENTRATION PROFILE IN ION-EXCHANGE WAVE-GUIDES BY FINITE-DIFFERENCE ADI METHOD

Simulation of the fabrication process of ion-exchange waveguide device s is essential. It involves calculation of concentration profile produ ced in the waveguides by numerical solution of field assisted ion-exch ange equation. The present work describes the use of Peaceman Rachford Alternating Direction Implicit finite difference method for finding t he numerical solution of the ion-exchange equation. The advantages of this method are elucidated by comparing it with other methods.