Extending the Limits in Optical-Fiber Design for Higher Power Applications Using Inverse Transmission-Line Techniques

In this paper, we present a new and efficient algorithm for the exact synthesis of large-mode-area (LMA) single-mode (SM) optical fibers supporting “perfect top-hat” modal electric-field profiles. We develop a technique for calculating directly and accurately the refractive-index profiles of such fibers from the knowledge of the top-hat modal electric field. The method we use to solve this inverse...