Phase Mask Consisting Of An Array Of Multiple Diffractive Elements For Simultaneous Accurate Fabrication Of Large Arrays Of Optical Couplers And Method For Making Same

Abstract

The present invention entails a phase mask for producing a plurality of volume gratings for use as optical couplers and method for creating the phase mask. The phase mask is produced by creating a plurality of volume gratings having predetermined characteristics which allow the phase mask, when excited by a coherent light wave, to produce a plurality of volume gratings in a recording material.