【摘要】 采用速率方程与Volterra变换方法,分析了垂直腔面发射激光器在微波模拟调制情况下,频率、自发辐射因子以及自发辐射寿命对三阶谐波和三阶互调失真的影响.结果表明垂直腔面发射激光器的非线性失真依赖于自发辐射物理量的变化,对激光器的自发辐射进行适当控制,可以抑制非线性对性能的影响,扩大其最大调制频率,提高基于VCSELs器件的ROF(radiooverfiber)系统的性能和应用范围.更多还原

【Abstract】 The nonlinear effect of vertical cavity surface emitting lasers (VCSELs) is analyzed using the Volterra transfer function in analog modulation.The effects of the modulation frequency,spontaneous emission factor,and spontaneous emission lifetime on the third harmonic and third-order intermodulation distortions are investigated.The results show that nonlinear effect depends on spontaneous emission parameters.The control of the nonlinear effect,expanding of the modulation frequency,and improvement of performance and application of ROF system based on VCSELs can be achieved by manipulating the spontaneous emission parameters of VCSELs.更多还原