Optical coupler design

In this work optical coupler is designed by various methods. The parameters needed to design optical coupler are found by the modal analysis. Matlab application programs that are written for the coupler constant and the difference of propagation constant are used for analysis and graphics. And also radial based function (RBF) artificial neural network is used to design optical coupler which is an alternative method.In the first section, the history of optical communication is given. In the second section the modal analysis in the planar slab optical waveguides are studied. Also modal analysis of cylindrical optical waveguides are studied in the third section. At the end of the third section leaky and radiation modes are observed. In the fourth section parameters needed to design optical coupler are found by the modal analysis. Coupler constant and the difference of propagation constant are examined. In the fifth section different couplers are designed using Matlab. In the sixth section the RBF is used to design optical coupler as an alternative method. In the last section the results are explained.Keywords: Modal analysis of dielectric optical waveguides, couple optical waveguides, optical coupler, the change of propagation constant, coupling coefficient, Radial Based Function (RBF), Artificial Neural Networks (ANN)