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Friday, December 22, 2017

Spectral Sorting for Small Pixels

Optics Express publishes an open-access paper "Spectral sorting of visible light using dielectric gratings" by Ujwol Palanchoke, Salim Boutami, and Serge Gidon, Commissariat à l'Energie Atomique et aux Energies Alternatives, Grenoble, France. From the abstract:

"We show that by using grating structures, the spectral sorter structures are more efficient when the detector size is less than 1µm, enabling the shrinking of the detector size to the wavelength scale. A comprehensive design strategy is derived that could be used as a design guideline to achieve the sorting of visible light. We show that for pixel size as small as 0.5µm, optical efficiency as high as 80% could be achieved using dielectric based sorting structures."

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