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Polymer Gelatin Waveguide In Conjuction With Integrated Holographic Optical Elements On GaAs, LiNb03, Glass, And Aluminum Substrates For Optical Interconnects, Signal Processing, And Computing

We have observed waveguiding in thin films of polymer gelatin on GaAs, LiNb03, glass and aluminum substrates. A graded index profile can be induced in the gelatin layer and tuned by wet processing. This makes it possible to form waveguides on any smooth surface. Locally sensitizing the gelatin waveguide with ammonium dichromate allows us to integrate single and multiplexed gratings on the same substrate to perform various functions for optical interconnects and signal processing. A waveguide grating coupler that converts free space TEM00 laser light to a two dimensional spherical guided wave with 50° angle of divergence has also demonstrated. A passive broadcasting network can be formed using this new technology. Further plausible applications such as WD(D)M local area network, optical interconnection, and optical computing are also presented.