A5070734835- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Advanced Photonic Communication Systems
- Semiconductor Lasers and Optical Devices
- Optical Coherence Tomography Applications
- Optical Network Technologies
- Plasmonic and Surface Plasmon Research
- Mechanical and Optical Resonators
- Magneto-Optical Properties and Applications
- Analytical Chemistry and Sensors
- Advanced Optical Sensing Technologies
- Photonic Crystals and Applications
- Metamaterials and Metasurfaces Applications
- Orbital Angular Momentum in Optics
- Advanced Antenna and Metasurface Technologies
- Dermatology and Skin Diseases
- Optical Wireless Communication Technologies
- Sparse and Compressive Sensing Techniques
- Near-Field Optical Microscopy
- Asthma and respiratory diseases
- Random lasers and scattering media
- Photoacoustic and Ultrasonic Imaging
- Antenna Design and Analysis
Southern University of Science and Technology
2017-2025
Regeneron (United States)
2024-2025
Xizang Minzu University
2025
Peng Cheng Laboratory
2020-2024
Shaanxi Normal University
2024
Hong Kong Polytechnic University
2007-2023
Henan Provincial People's Hospital
2023
Henan University
2023
Zhengzhou University
2023
University of Macau
2023
Abstract Optical fiber gratings have developed into a mature technology with wide range of applications in various areas, including physical sensing for temperature, strain, acoustic waves and pressure. All these rely on the perturbation period or refractive index grating inscribed core as transducing mechanism between quantity to be measured optical spectral response grating. This paper presents relatively recent variant concept, whereby small tilt fringes causes coupling power from mode...
A novel intrinsic fiber optic pressure sensor realized with a polarization-maintaining photonic crystal (PM-PCF) based Sagnac interferometer is proposed and demonstrated experimentally. large wavelength-pressure coefficient of 3.42 nm/MPa was measured using 58.4 cm long PM-PCF as the sensing element. Owing to inherently low bending loss thermal dependence PM-PCF, very compact exhibits temperature sensitivity.
Metal halide perovskite nanostructures have emerged as low-dimensional semiconductors of great significance in many fields such photovoltaics, photonics, and optoelectronics. Extensive efforts on the controlled synthesis been made towards potential device applications. The engineering their band structures holds promise rational tuning electronic optical properties nanostructures, which is one keys to achieving efficient multifunctional optoelectronic devices. In this article, we summarize...
Abstract In recent years, surface-enhanced Raman scattering (SERS) of a molecule/metal–semiconductor hybrid system has attracted considerable interest and regarded as the synergetic contribution electromagnetic chemical enhancements from incorporation noble metal into semiconductor nanomaterials. However, underlying mechanism is still to be revealed in detail. Herein, we report an irreversible accumulated SERS behavior induced by near-infrared (NIR) light irradiating on 4-mercaptobenzoic...
Phase-sensitive optical time-domain reflectometry (Φ-OTDR) has attracted numerous attention due to its superior performance in detecting the weak perturbations along fiber. Relying on ultra-sensitivity of light phase tiny deformation fiber, Φ-OTDR been treated as a powerful technique with wide range applications. It is fundamental extract scattering wave accurately and methods include coherent detection, I/Q demodulation, 3 by coupler, dual probe pulses, so on. Meanwhile, researchers have...
We report the fabrication and characterization of a highly sensitive refractive-index sensor based on long-period grating (LPG) pair with fiber-taper section in between. Two LPGs /spl sim/3-dB transmissivity form an in-fiber Mach-Zehnder interferometer. A fiber taper is made between two to improve tailor sensitivity sensor. Enhanced sensitivity, which about five times higher than that normal LPG pair, achieved experiment.
The generation of surface plasmon resonances (SPRs) in gold-coated weakly tilted fiber Bragg gratings (TFBGs) strongly depends on the state polarization core guided light. Recently, it was demonstrated that rotating linear light by 90° with respect to grating tilt allows turn SPR and off. In this work, we measure Jones matrix associated TFBG transmission properties order be able analyze different polarization-related parameters (i.e. dependency wavelength dependent loss first Stokes...
Besides distinct features on RF/optical signal generation, optoelectronic oscillators (OEOs) have also been rapidly developed as emerging techniques towards sensing, measurement, and detection. In this paper, we start with the conceptual architecture analytical model of OEOs. Then, three operation principles behind detection applications are categorized, including variation time delay loop, passband reconfiguration microwave photonic filter in oscillation gain from injection locking, which...
Lead-free double perovskite phosphors are promising alternatives to lead halide perovskites for wide uses in optoelectronic applications, but suffer from a low quantum efficiency. Here, we propose enhance the efficiency of orange-emitting Cs2Ag0.4Na0.6InCl6:Bi via codoping strategy. The internal Cs2Ag0.4Na0.6InCl6:1% Bi phosphor was increased 89.9% record 98.4 and 98.6% by with 1% Ni Ce, respectively. High-level density functional theory calculations have revealed that enhanced is ascribed...
This review investigates strategies for employing μ-IMERs continuous biocatalysis<italic>via</italic>a top-down approach.
Nowadays, the microwave photonics (MWP) concept has been evolved from laboratory tests to practical applications, and related techniques have widely deployed in many fields including such as wireless communications, medicine, sensing, radars, electronic warfare, space explorations. In this paper, we concentrate on featured applications of MWP high-speed railways (HSRs), an emerging field massive market, overview about our recent work is presented. The radio-over-fiber based communications...
An adaptive image restoration algorithm based on 2-D bilateral filtering has been proposed to enhance the signal-to-noise ratio (SNR) of intrusion location for phase-sensitive optical time domain reflectometry (Φ-OTDR) system. By converting spatial and information Φ-OTDR traces into image, can smooth noise preserve useful signal efficiently. To simplify algorithm, a Lorentz function is adopted replace original Gaussian function, which higher practicability. Furthermore, an parameter setting...
Abstract Food production in green crops is severely limited by low activity and poor specificity of D-ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) natural photosynthesis (NPS). This work presents a scientific solution to overcome this problem immobilizing RuBisCO into microfluidic reactor, which demonstrates continuous glucose precursor at 13.8 μmol g −1 min from CO 2 ribulose-1,5-bisphosphate. Experiments show that the immobilization significantly enhances enzyme stabilities...
Optical computing and optical neural network have gained increasing attention in recent years because of their potential advantages parallel processing at the speed light low power consumption by comparison with electronic computing. The implementation fundamental building blocks a digital computer, i.e. logic gates, has been investigated extensively past few decades. gate is an alternative approach to various analogue architectures. In this paper, latest development different kinds...
Abstract The nitrate electroreduction reaction (NO 3 RR) offers an eco‐friendly alternative to the Haber–Bosch technology for ammonia (NH ) synthesis. However, complex process and diverse products make efficient NH synthesis challenging. Therefore, rational design preparation of highly electrocatalysts are crucial NO RR. Herein, ultrathin copper‐nickel oxide (Cu‐NiO) nanosheets (Cu‐NiO UTNSs) synthesized via cyanogel‐NaBH 4 hydrolysis‐reduction method, which applied cathodic RR ‐assisted...
We demonstrate a compact power-referenced fiber-optic accelerometer using weakly tilted fiber Bragg grating (TFBG) combined with an abrupt biconical taper.The electric-arc-heating induced taper is located short distance upstream from the TFBG and functions as bridge to recouple TFBG-excited lower-order cladding modes back into core.This recoupling extremely sensitive microbending.We avoid complex wavelength interrogation by simply monitoring power change in reflection, which we show be...
A novel fiber optic bend sensor is implemented by using a re-grown tilted Bragg grating (TFBG) written in small core single mode with UV overexposure. The spectrum of the TFBG contrasts that normal exhibiting large differences amplitude between neighboring symmetric (LP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0m</sub> ) and asymmetric xmlns:xlink="http://www.w3.org/1999/xlink">1m</sub> cladding resonances, moreover each resonance splits...
A novel magnetic field sensor using tilted fiber Bragg grating (TFBG) interacting with fluid is proposed and experimentally demonstrated.The TFBG surrounded by whose complex refractive index changes external field.The guiding properties of cladding modes excited the are therefore modulated field.As a result, strength measurement successfully achieved within range up to 196 Gauss monitoring extinction ratio mode resonance.Furthermore, temperature variation can be obtained simultaneously from...
What we believe to be a novel fiber-optical inclinometer based on dual-path core-to-cladding mode coupling mechanism is demonstrated. Both the amplitude and tilt direction of bends about 2-mm-long flexure joint in an optical fiber can determined. The sensor head consists nonadiabatic abrupt taper cascaded with weakly tilted Bragg grating. Measured bend angles up 12 degrees are demonstrated, as well method increase sensitivity for smaller than 4 degrees.
A miniature surface plasmon resonance sensor is fabricated from a gold-coated standard optical fiber with an in-core tilted Bragg grating by UV exposure. The has measured refractive index sensitivity of 571.5 nm/RIU (refractive unit) at constant temperature. We show here that the intrinsic temperature this device reduced to less than 6.3 pm/degrees C (between 23 degrees and 59 C) when measurements are referenced core mode reflection grating. This residual essentially 50 nm thick deposited...