Estimation of Petermann I, Petermann II spot sizes for kerr-type nonlinear dispersion-shifted along with dispersion-flattened optical fibers in fundamental mode guidance applying a simple but accurate formalism

Abstract

This paper reports simplified but accurate form of analytical expressions concerning the estimation of Petermann I and II spot sizes. Typical examples of dispersion-managed fibers for fundamental mode guidance with suitable [Formula: see text] numbers have been considered in our investigation. We employ the mathematical formulation in the estimation of Petermann spot sizes for the said fibers under the absence and existence of Kerr-type nonlinearity. Iteration technique is utilized in our investigation. Our predicted outcomes show excellent agreement with the precise numerical results found by complicated finite element method both in the absence and presence of Kerr-kind nonlinearity.