Focusing grating coupler design method using holographic optical elements

Abstract

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 in the final spot. A design method is demonstrated that can be used to model the FGC as a holographic optical element. The method also includes techniques to eliminate the aberrations due to the wavelength scaling.