Analysis Method of an Optical Fiber with Axially Symmetric and Staircase Refractive Index Distribution - pursueing mirror fiber

摘要

This article presents an analysis method for the propagation characteristics of a fiber whose refractive index is axially symmetric and is represented by staircase function. Electro-magnetic fields in each layer are represented by a matrix form. Eigenvalue equations for TE and TM modes are derived in this paper. This method can be applied to a fiber with arbitrary index difference. The analysis assumes a mirror fiber where optical wave is confined by Bragg diffraction due to the periodic structure.