Analysis of Polarization Maintaining Optical Fibers under External Stress

Abstract

This present study is on detailed physical explanation of stress- induced birefringence in Step index polarization , maintaining elliptical core optical fibers. The birefringence is a Quadratic function of the effective index change, which may occur due to changes of stress Distribution within a material. In this study, changes in birefringence have been observed By applying lateral pressures. The effects on birefringence with changing ellipticity of Core of the fiber have been observed by applying no pressure. Pressure along x-axis and y-axis On the optical fiber. Finally, the birefringence of an optical fiber resulting from an Asymmetry of the index profile has been numerically evaluated using finite-element Method (FEM).