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- W4317472770 abstract "Superoscillation refers to a phenomenon where a band-limited wave locally oscillates faster than its highest Fourier component. Current research on optical superoscillations predominantly lies on the basis of free-space waves. As the optical waveguides play a key role in energy and information transportation, guided waves with precisely controlled deep-subwavelength features offers unprecedented flexibility for applications. In this Letter, we numerically show that, by superimposing eigenmodes of a multimode SiO 2 waveguide and forcing the resultant field to pass through a set of predetermined points, superoscillatory fields in various shapes can be formed in preset cross-sectional planes. Furthermore, by padding prescribed intensities in multiple cross sections, we successfully create a persistent superoscillatory saddle." @default.
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- W4317472770 date "2023-02-21" @default.
- W4317472770 modified "2023-10-06" @default.
- W4317472770 title "Creation and preservation of superoscillation in a dielectric optical waveguide" @default.
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- W4317472770 doi "https://doi.org/10.1364/ol.483792" @default.
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