Abstract: We study self-collimation and beam splitting in low-refractive-index photonic crystals created within chalcogenide glass. We propose a beam splitter structure that allows direct experimental verification of photonic-crystal effects at optical wavelengths in a straightforward and definitive manner. The beam splitter provides angular separation of 90 degrees using a highly compact spatial footprint, thus delivering direct application in highly integrated photonic devices. Crown Copyright

Keywords: self-collimation; chalcogenide glass; beam splitters; integrated optics devices;; chalcogenide glasses; band-gap; maxwells equations; light; nanowires; films

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