Numerical analysis of amplification characteristic of ytterbium-sensitized erbium-doped waveguide amplifiers by the finite difference beam propagation method

Abstract

An efficient analysis method for ytterbium-sensitized erbium-doped optical waveguide amplifiers (EDWA) is presented. By solving rate equations, the propagation in EDWA is stimulated using the finite difference beam propagation method (FD-BPM). The dependence of gain of EDWA is investigated regarding the waveguide length, erbium concentration, and pump efficiency, etc.