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Adopting phase change material (PCM) in constructing nonvolatile on‐chip photonic switches has received intensive attention recently. Usually, a large‐area thin PCM film is directly used to construct a switch. Here, subwavelength structured PCM supporting localized resonance are adopted to efficiently improve the switching performance in a moderate bandwidth to obtain an optimal switch of higher switching...
Micro‐spectroscopy is a critical instrument for spectrum analysis in various applications such as chemical and biological analysis, environment detection, and hyperspectral imaging. However, current micro‐spectral technique requires bulky and costly spectrometer. In this report, a new type of Bloch surface wave (BSW) based micro‐spectrometer is proposed. A single silicon nanoparticle sitting on a...
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