<title>Large-scale optical interconnects based on substrate-mode holographic elements</title>

Abstract

A method for designing a large scale holographic interconnects system is presented. The building-block of the interconnects system is composed of two identical holographic optical elements (HOEs), which are recorded on the same plate. To achieve both high diffraction efficiencies and diffraction limited performances, the holographic elements are recorded with predistorted wavefronts which are taken recursively from interim holograms. To provide optical interconnections for a large number of source-detector pairs on the same board, a method for recording simultaneously a large number of building blocks on the same recording plate, is presented. With this method, the HOEs are recorded by reconstructing simultaneously the `parents' holograms, which are pre-prepared on an intermediate plate, and using the output beams to record the final elements. A special recording geometry is suggested in order to prevent cross-talk between the various HOEs, and to assure high diffraction efficiencies and low aberrations for all the interconnects.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.