Effects of a Microcavity on Harmonic and Intermodulation Distortionsof a Vertical Cavity Surface Emitting Laser
微腔效应对垂直腔面发射激光器谐波和互调失真的影响

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.