垂直腔半导体光放大器的增益特性数值分析

Numerical Analyses on Gain Properties of Vertical-cavity Semiconductor Optical Amplifiers

结合垂直腔半导体光放大器(VCSOAs)的竖直微型腔结构带来的特性,在反射工作模式情况下,分析了VCSOAs的增益特性。通过数值求解激光器单模速率方程,给出了增益、饱和输出功率随泵浦光功率、出射腔面反射率的变化,分析了其功率动态范围。得出了提高腔面反射率能使增益得到增长,以及强泵浦光功率能起到平坦增益,增大增益的作用的结论。总结了VCSOAs设计中的一些规律,以作实际应用中参考。

Considered with the vertical micro-cavity effects of vertical-cavity semiconductor optical amplifiers, gain properties are analyzed in reflection mode. Based on solving laser single-mode rate equation numerically, the facts are given that optical gain and output saturation power are changing due to the variation of optical pump power or output mirror reflectivity. Dymanic power extension is analyzed simultaneously. A conclusion is made that the increase of output mirror reflectivity is with the increase of optical gain, and strong pump light power will lead to gain flatness and larger gain. Some results are summarized to providing references of practical applications.