The focusing grating coupler (FGC) can be constructed using holographic techniques.  Due to the wavelength scaling between the construction of the FGC and its final end-use operation, aberrations exist ill the final spot.  A design method is demonstrated, using a commercially available ray trace code, that models the FGC as a holographic optical element (HOE).  The method also includes techniques to eliminate the aberrations due to the wavelength scaling.