Effect of Si-nc to ${\hbox {Er}}^{3+}$ Coupling Ratio in EDWAs Longitudinally Pumped by Visible Broad-Area Lasers

We present a finite element based model for Si-nc sensitized ${\hbox {Er}}^{3+}$ doped waveguide amplifiers (EDWA), longitudinally pumped by a novel pumping scheme using broad-area visible lasers, which accurately describes the effect of the Si-nc to ${\hbox {Er}}^{3+}$ coupling ratio on the amplifier performance.