Spectroscopic Analysis of Raman Lasing Features in P2O5 Doped Single-Mode Fiber

Abstract

The spectroscopic analysis of the Raman gain profiles for P2O5 doped fibers is presented in comparison with customary GeO2 doped fibers. Both spectra were determined from the experimental spectra of spontaneous scattering. Based on the Gaussian decomposition the analytical expressions of the Raman gain profiles are obtained and it is fitted the experimental data with an accuracy of not less than 0.1%. The calculation results are analyzed in terms of both the fundamental vibrational dynamics of the amorphous glass in fiber core and in the application aspect of the fiber laser modeling.