Coupling efficiency using non-uniform diffused Tapered waveguide

This paper reports modeling and simulation of low-loss coupling between two different sections standard optical fiber using a Tapered waveguide made by ion exchange technique on glass substrate. The numerical method used for calculations is the finite-difference vector beam propagation method (FD-VBPM). We also study concave and convex ion exchange (IEx) Tapers which are obtained by varying the parameter α. Length, input and output cross-section of this component, are also varied in order to investigate the effects of geometric parameters on coupling efficiency. The calculated coupling losses are reasonable and acceptable.