We have experimentally demonstrated an optical material structure consisting of monocrystalline colloidal crystals and a planar waveguide. We have performed experimental studies of light coupling into the waveguide structure via colloidal gratings, as well as the multiplexing capability of the structure. Effective index obtained from measured parameters agrees well with theoretical calculations. Effect of crystal nonuniformity on diffraction line shape and width, as well as possible applications are discussed.
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Zhao et al. (1999) studied this question.
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