Abstract
A combination of the plane-wave expansion method with the effective-index approximation is presented, which allows vectorial properties of electromagnetic field in three-dimensional structures to be considered. I formulate mathematical equations that are the basis of this combined approach, and then I show the simulation of the optical properties of oxide-confined vertical-cavity surface-emitting lasers (VCSELs). The results are compared with the ones obtained with the classical effective-index method and with the fully vectorial plane-wave admittance method. Next the semivectorial properties of the new model are utilized to analyze a birefringent VCSEL structure.
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