Results 11 to 20 of about 769 (50)
Opto-Electronic Advances, 2023 Optical logic gates play important roles in all-optical logic circuits, which lie at the heart of the next-generation optical computing technology. However, the intrinsic contradiction between compactness and robustness hinders the development in this ...
Yijia Huang +11 more
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Sensors, 2021 We demonstrated a wavelength-tunable, ultra-wideband, biconical, long-period fiber grating (BLPFG) mode converter in a two-mode fiber based on fusion taper technology and CO2 laser writing technology.
Yu Zheng +4 more
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Meta-optics empowered vector visual cryptography for high security and rapid decryption
Nature Communications, 2023 Usual methods for optical encryption suffer from a tradeoff between the level of security and the complexity of operation given by multiple optical measurements or digital postprocessing. Here, the authors show a multi-d.o.f.
Fei Zhang +9 more
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Light: Science & Applications, 2021 With inherent orthogonality, both the spin angular momentum (SAM) and orbital angular momentum (OAM) of photons have been utilized to expand the dimensions of quantum information, optical communications, and information processing, wherein simultaneous ...
Yinghui Guo +8 more
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Nanoscale Research Letters, 2018 Self-assembled organic-inorganic CH3NH3PbI3 perovskite microwires (MWs) upon humidity exposure along several weeks were investigated by photoluminescence (PL) spectroscopy, Raman spectroscopy, and X-ray diffraction (XRD). We show that, in addition to the
Rubén Segovia +5 more
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Optimization of Pinned Photodiode Pixels for High-Speed Time of Flight Applications
IEEE Journal of the Electron Devices Society, 2018 We discuss optimizations of pinned photodiode (PPD) pixels for indirect time of flight sensors. We focus on the transfer-gate and dumping gate regions optimization, on the PPD dimension and shape to assure fast lateral charge transfer and on the ...
Fabio Acerbi +7 more
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Nanophotonics, 2023 Dynamic manipulation of terahertz (THz) beams plays an important role in THz application systems. The PB metasurface provides an effective scheme for space separation and deflection of the spin beam.
Zhao Huijun +7 more
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Multi-Wavelength Super-Resolution Imaging by Structured Illumination of Bloch Surface Waves
IEEE Photonics Journal, 2022 Multi-wavelength imaging ability is important for bio-imaging, to obtain multi-modal information of biological activities. We propose a multi-wavelength super-resolution imaging method, employing the Bloch surface waves (BSWs) supported by one ...
Zhenyan Li +8 more
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All-Dielectric Meta-Surface for Multispectral Photography by Theta Modulation
Nanomaterials, 2020 The traditional theta modulator encodes input information by superimposing Ronchi sub-gratings, which is extremely easy to cause spatial channel overlap that results in bands mixing.
Meng Xiang +5 more
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IET Microwaves, Antennas & Propagation, 2021 Scattering and absorption of the H‐polarized plane wave by the infinite grating of flat graphene strips are considered in the environment met most frequently—on or at the surface of a dielectric‐slab substrate. The full‐wave meshless code is based on the
Fedir O. Yevtushenko +3 more
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