A5100442211- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Orbital Angular Momentum in Optics
- Advanced Fiber Laser Technologies
- Microfluidic and Bio-sensing Technologies
- Photonic Crystal and Fiber Optics
- Silk-based biomaterials and applications
- Semiconductor Lasers and Optical Devices
- Near-Field Optical Microscopy
- Plasmonic and Surface Plasmon Research
- Neurobiology and Insect Physiology Research
- Advanced MIMO Systems Optimization
- Optical Network Technologies
- Digital Holography and Microscopy
- Phase-change materials and chalcogenides
- Optical Coherence Tomography Applications
- Solid State Laser Technologies
- Luminescence Properties of Advanced Materials
- Microwave Engineering and Waveguides
- Vibration and Dynamic Analysis
- Millimeter-Wave Propagation and Modeling
- Advanced Surface Polishing Techniques
- Magneto-Optical Properties and Applications
- Glass properties and applications
- Optical measurement and interference techniques
Harbin Engineering University
2016-2025
Ministry of Industry and Information Technology
2023-2025
Taiyuan University of Technology
2011-2025
Peking University People's Hospital
2024
Peking University
2024
Research!America (United States)
2018-2022
Samsung (United States)
2013-2022
Zhejiang A & F University
2022
Harbin University
2021
Guilin University of Electronic Technology
2018
We report a compact triple-band tunable perfect terahertz metamaterial absorber (TMA) at the subwavelength scale of thickness, which is composed planar metallic disk resonator array above conductive ground plane separated with liquid crystal (LC) mixture. The calculations absorption spectra demonstrate triple near-unity bands in gap plasmonic resonance coupling regime. Three frequencies exhibit continuous linear-tunability as changing refractive index LC. Remarkably, each peak absorbance...
We propose an ultrasensitive tunable terahertz (THz) sensor which consists of single-layer graphene-based gratings integrated with a Fabry-Perot cavity through numerical simulation. The excitation standing-wave graphene surface plasmon polaritons can make the probing field strongly confined in gap cavity. This provides excellent platform for and high figure-of-merit (FOM) refractive index sensing at THz band. Our full-wave electromagnetic simulations show frequency sensitivity as 4.2 per...
We propose and demonstrate a hybrid fiber-based sensor combining multimode interference (MMI) structure surface plasmon resonance (SPR) for simultaneous measurement of temperature refractive index (RI) liquid sample. configure the MMI by connecting single-mode fiber, no-core fiber sequentially. set up SPR coating gold film with thickness 50 nm on fiber. measure sensitivity RI structure, respectively. Then we obtain coefficient matrix to simultaneously sample highest 2061.6 nm/RIU 37.9 pm/°C....
To address the problem of early warning pipeline leakage, this letter proposes a leakage method based on DAS. Through DAS monitoring vibration signals induced by different degree corrosion and blockage, using pattern recognition techniques, distributed location are realized. By conducting simulations experimental analyses, differences in characteristics caused four types anomalies were validated. Combining wavelet packet energy ratios BP neural network, average rate for five event classes...
Abstract Using the flexibility and diversity of material structure designs possible with 3D printing fiber technology, an all‐solid photonic crystal (PCF) is fabricated using borate (B 2 O 3 ) doping. The geometry, material, optical properties this printed PCF are characterized analyzed microscopy, scanning electron microscopy (SEM), index profilometry, Fourier transform infrared (FTIR) microscopy. Analysis demonstrates that B doped in has experienced evaporation leading to mass loss during...
The scale of a scramjet has profound impact on its combustion characteristics, and accurately replicating the integrated coupling dynamics between an aircraft in wind tunnel tests remains significant challenge. To address critical issues natural frequency sensitivity associated with force balances large-scale model short-time measurement tests, this paper presents specialized three-component optical fiber balance designed for precise short-term models. Aerodynamic measurements are achieved...
Along with the ever expanding frontiers of photonic applications as world is fast advancing into information era, there a growing market for specialty waveguides and fibers requiring sophisticated structures materials that conventional manufacturing technologies meet great challenges difficulties to accommodate. Advanced 3D printing or additive possesses flexibility in structure diversity material emerging an essential alternative developing novel waveguides, fibers, devices new...
To overcome the limitations by pulse width on event zone measurement capability, a novel temperature demodulation scheme was proposed and validated to measure sub-pulse length zones based slope-assisted Brillouin frequency shift (SA-BFS). Unlike conventional BFS-based methods, this approach leverages BFS slope for demodulation, enabling precise of sub-pulse-length zones. We developed theoretical model that established linear relationship between temperature, through simulations experiments...
A new directional bending sensor based on a dual side-hole fiber (DSHF) that can detect both the direction and magnitude of in self-temperature compensated manner is described experimentally demonstrated. The an in-fiber Mach-Zehnder interferometer (MZI), where DSHF segment was spliced between two standard single-mode fibers (SMFs) as input output. has orthogonal axes which are formed by asymmetry location offset fusion splice SMF DSHF. visibility MZI output intensity spectral shifts fringes...
All-inorganic cesium lead halide perovskite quantum dots (PQDs) appear to be promising scintillators for radiation detection; however, they are suffering from poor stabilities against light, heat, and moisture. Here a strategy of using AgCl as the nucleating agent is developed facilitate growth <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msub> <mml:mi mathvariant="normal">C</mml:mi> mathvariant="normal">s</mml:mi>...
Hybrid beamforming is an attractive solution to build cost-effective and energy-efficient transceivers for millimeter-wave terahertz systems. However, conventional hybrid techniques rely on analog components that generate a frequency flat response such as phase-shifters switches, which limits the flexibility of achievable beam patterns. As novel alternative, this paper proposes new class called Joint phase-time arrays (JPTA), additionally use true-time delay elements in create...
Respiration is essential for supporting human body functions. However, a biocompatible fiber respiration sensor has rarely been discussed. In this study, we propose wearable surface plasmon resonance (SPR) using LiBr-doped silk fibroin (SF) film. The SPR monitors by responding to airway humidity variation during inhalation and exhalation. We fabricated the depositing core of plastic-clad optical with gold film an SF-LiBr composite can absorb water through interaction between molecules...
Based on the analysis and research of existing intelligent bolt technology, this article proposes a smart based fiber Bragg grating sensing technology. The design process was systematically introduced, physical model three-point fixed anti-tail sloshing given, as well corresponding simulation experimental comparison. ability to monitor looseness bolts also tested installed unit in fiber-optic grid system for monitoring testing. wire dancing test machine used simulate various practical...
An ultrabroadband near-infrared (NIR) emission of Ni2+ is demonstrated in a highly transparent nanoglass ceramic (nano-GC) containing Ga2O3 nanocrystals with an 808 nm excitation Nd3+. It also shown that by adding Yb3+ as energy-transfer (ET) bridge, the could be substantially enhanced. The dopant distribution was studied using advanced analytical transmission electron microscopy. This, together optical measurements and steady-state time-resolved spectra, utilized to understand underlying ET...