Mathematical model of the absorption and gain in a <inline-formula><math display="inline" overflow="scroll"><msub><mi>Cd</mi><mrow><mn>3</mn></mrow></msub><msub><mstyle mathvariant="normal"><mtext>P</mtext></mstyle><mrow><mn>2</mn></mrow></msub></math></inline-formula> cylinder fiber

Abstract

A theoretical analysis of the light absorption and gain mechanisms in a Cd3P2 Semiconductor Cylinder Fiber is presented. The results of these calculations are in good agreement with previously published experimental data. Cd3P2 has two direct energy gaps, which both influence the gain mechanism. Pump light can be used to reduce the absorption. Stronger pump light that generates more charge carriers will produce net gain (gain above absorption compensation). The fiber exhibits gain over a very wide light wavelength bandwidth.