A5103096105- Plasmonic and Surface Plasmon Research
- Metamaterials and Metasurfaces Applications
- Orbital Angular Momentum in Optics
- Photonic Crystal and Fiber Optics
- Advanced Fiber Optic Sensors
- Advanced Antenna and Metasurface Technologies
- Optical Network Technologies
- Spectroscopy and Laser Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic and Optical Devices
- Advanced biosensing and bioanalysis techniques
- Neural Networks and Reservoir Computing
- Optical Coatings and Gratings
- Polydiacetylene-based materials and applications
- Digital Holography and Microscopy
- Advanced Fiber Laser Technologies
- Gas Sensing Nanomaterials and Sensors
- Photonic Crystals and Applications
- Advanced Optical Imaging Technologies
Collaborative Innovation Center of Advanced Microstructures
2024
Nanjing University
2023-2024
National Laboratory of Solid State Microstructures
2023
China University of Mining and Technology
2019-2021
Spiral phase contrast imaging and bright-field are two widely used modes in microscopy, providing distinct morphological information about objects. However, conventional microscopes always unable to operate with these at the same time need additional optical elements switch between them. Here, we present a microscopy setup that incorporates dielectric metasurface capable of achieving spiral synchronously. The not only can focus light for diffraction-limited but also perform two-dimensional...
Abstract Providing additional degrees of freedom to manipulate light, spatiotemporal optical vortex (STOV) beams carrying transverse orbital angular momentum are fundamental importance for control light-matter interactions. Unfortunately, existing methods generate STOV plagued by various limitations such as inefficiency, bulkiness, and complexity. Here, we theoretically propose experimentally demonstrate a microscale singlet platform composed slanted nanograting STOV. Leveraging the...
Optical analog image processing technology is expected to provide an effective solution for high-throughput and real-time data with low power consumption. In various operations, optical spatial differential operations are essential in edge extraction, compression, feature classification. Unfortunately, existing methods can only perform low-order or selectively a particular high-order operation. Here, we propose experimentally demonstrate Bessel vortex modulated metalens composed of single...
This paper proposes a methane sensor based on localized surface plasmon resonance (LSPR) of hexagonal periodic gold nanoring array. The effects structural parameters the extinction spectrum and refractive index (RI) sensitivity are analyzed to obtain optimal parameters. In particular, RI can reach 550.08 nm/RIU through improvement structure, which is an increase 17.4% over original value. After coating methane-sensitive membrane inner outer surfaces rings, concentration be accurately...
A high-sensitive and transverse-stress compensated methane sensor based on a photonic crystal fiber long-period grating (PCF-LPG) is proposed. The outermost layer of the PCF consists six large sideholes, five which are coated with methane-sensitive compound film to achieve measurement. Such side-hole structure helpful for gas sensitive reaction, but not conducive avoiding external stress interference. Therefore, last hole plated silver eliminate cross-sensitivity effect through adding...
Abstract A fractional perfect optical vortex (FPOV) represents a class of structured light characterized by phase singularities carrying orbital angular momentum (OAM). It manifests notched annular intensity distribution, and notably, the size this distribution remains independent topological charge. Conventional methods for generating FPOVs involve series cascaded bulk components, leading to aberrations due alignment errors impeding their integration into highly integrated devices. In work,...
A gas-mixture sensor based on local surface plasmon resonance (LSPR) behavior in metal-dielectric-metal (MDM) periodic array is proposed. The comparisons of gas sensing performance between metal-dielectric (MD) and MDM structure are discussed for single-gas separately. influence structural parameters the extinction spectrum sensitivity analyzed to obtain optimal parameters. By replacing dielectric with suitable gas-sensitive films, mixture methane hydrogen can be accurately measured without...
A temperature-controlled dual-core photonic crystal fiber splitter having multiple coupling characteristics is designed through infiltrating a mixture of toluene and chloroform into the twin-core holes. Multiple splitting functions are integrated in same PCF structure with fixed length. The incident light within range 1.30–1.70 μm can be divided two polarized components orthogonal directions. maximum bandwidth extinction ratio reach 255 nm −68 dB when external temperature varies from 10 °C...
Abstract The multi‐dimensional light‐field manipulation capability of metasurfaces positions them as promising candidates for displaying nanoprinting and holographic images at ultra‐short distances with subwavelength resolution. In recent years, merging into a single‐layer metasurface has emerged research focus to enhance information storage capacity. However, existing multi‐channel designs often limit the number polarization states available image. Here, scheme is proposed demonstrated...
The phase-shifting structured light illumination technique is widely used in imaging but often relies on mechanical translation stages or spatial modulators, leading to system instability, low displacement accuracy, and limited integration feasibility. In response these challenges, we propose demonstrate an approach for generating far-field using a polarization multiplexing metasurface. By controlling the states of incident transmitted light, metasurface creates three-step eliminating need...
Conventionally, optical coatings transmit and reflect the complementary colors due to limitations of resonant modes in multilayered structures. Here, we experimentally demonstrate a type semi-transparent coating that can produce same color transmission reflection based on Fano resonance. The results verify when metallic spacer is extremely thin, almost reflectance transmittance spectra be simultaneously achieved with efficiency about 40%. Furthermore, comprehensively explore change by...