W Fiber with Rectangular central Dip: Optimization based Mode Field Diameters

Abstract

An approach to optimization of a W single mode optical fiber, combining the Finite Element method (FEM), the Design of Experiments (DOE) method and the Sequential Quadratic Programming (SQP) method for constrained optimization, is presented. A global objective function (GOF) for multiresponse optimization is used, in which the partial objective functions (POP), i. e., the mode field diameters (MFDs), are multiplied by relevant weighting factors. The paper outlines the basic features of this approach, its advantages and its applicability in real practical work.