SUBSTRATE-MODE HOLOGRAMS USED IN OPTICAL INTERCONNECTS - DESIGN ISSUES

We discuss a number of design issues that affect the performance toler ances of substrate-mode holograms used for optical interconnect system s. We examine the effects of emulsion uniformity, thickness variation, and index variation on the ability to determine the Bragg angle and t he diffraction angle within The environmental stability with respect t o temperature, laser irradiance, and Experimental results are presente d for substrate-mode holograms fabricated in spin-coated dichromated-g elatin emulsions. The coupling properties for a 1 x 2 multiplexed subs trate-mode hologram with two superimposed gratings are also described.