Modeling and numerical simulation of the output spectrum of a broadband Vanadium-doped optical fiber light source

Abstract

Preliminary results have been achieved in the study of rare-earth doped fiber amplifiers. Further studies on rare earth ion vanadium are discussed in this paper. Based on the rate equation and power propagation equation, a model for the variation of output spectrum with fiber length, doping concentration and pumping power is constructed and solved by MATLAB, ODE45 function to explore the variation of Vanadium-doped fiber output spectrum with control variables from experimental aspects. The numerical simulation results show that the variation is proportional and the output power spectrum is enhanced with increasing fiber length, doping concentration and pump power, respectively. It is observed from the experimental data that the fiber length and doping concentration vary similarly and the output power spectrum expands nearly three times when the optical length and pump power are increased by a factor of two. This model can provide some directions for selecting Vanadium-doped fiber amplifiers and designing vanadium-doped amplifiers.