Abstract
Abstract The application of dichromated gelatine transmission holograms as holographic optical elements for permutation components is demonstrated. These holographic deflection elements will be used as permutation components in a demonstrator for an optoelectronic switching network working with 1 GHz per channel. The use of a standard holographic material and recording process for faceted holograms for infrared light at 1·5 μm is investigated. The important parameters such as refractive index modulation of the gelatine, angular selectivity and scattering are investigated and compared with the corresponding results for visible light. It is shown that it is possible to produce holograms for infrared light with similar diffraction efficiencies to those for visible light.
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