Bessel function and perturbation analyses of the FM and IM behavior of a directly modulated semiconductor laser

摘要

Harmonic distortion in a semiconductor laser is described with the aid of a nonlinear differential equation for the photon density, derived from the rate equations. Analytical results are obtained by linearization, and curves are presented showing the fundamental, second-order harmonic and third-order harmonic IM and FM responses. The present development provides a significant improvement in the third-order harmonic characteristics. The comparison between Bessel functions analysis and the perturbation method is quite successful.