A5101808334- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Advanced Fiber Laser Technologies
- Mechanical and Optical Resonators
- Photonic Crystal and Fiber Optics
- Power Systems and Renewable Energy
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Semiconductor Lasers and Optical Devices
- Photonic Crystals and Applications
- Microgrid Control and Optimization
- Optical Network Technologies
- Electric Motor Design and Analysis
- Advanced MEMS and NEMS Technologies
- Multilevel Inverters and Converters
- Additive Manufacturing Materials and Processes
- Power Systems and Technologies
- Additive Manufacturing and 3D Printing Technologies
- Plasmonic and Surface Plasmon Research
- Magneto-Optical Properties and Applications
- Wind Turbine Control Systems
- Smart Grid and Power Systems
- High-Voltage Power Transmission Systems
- Electrowetting and Microfluidic Technologies
- Magnetic confinement fusion research
Shanghai University
2010-2024
Institute of Plasma Physics
2019-2024
Chinese Academy of Sciences
2019-2024
Hefei Institutes of Physical Science
2023
Shanghai Institute of Ceramics
2022
University of Chinese Academy of Sciences
2022
Changsha University
2021
Huazhong University of Science and Technology
2013-2021
Aston University
2019-2021
Tianjin University of Technology and Education
2015
We demonstrate an optical fiber displacement sensor based on the Vernier effect, consisting of a single-mode (SMF) and section capillary with internal movable microsphere freely controlled forward backward by half-taper. The antiresonance is inhibited to purify reflectance spectra optimizing length. interference three beams reflected from splicing interface, front rear surfaces microsphere, respectively, hence results in effect due combined cavities. By adjusting distance between interface...
In this paper, a detailed theoretical study on the characteristics of cone-shaped inwall capillary-based microsphere resonators is described and demonstrated for sensing applications. The maximum, minimum, slope, contrast, width Fano resonance are analyzed. As transmission coefficient capillary resonator increases, absolute value slope resonances increases to reach its which useful sensors with an ultra-high sensitivity. There occurs another phenomenon electromagnetically induced...
In this paper, we demonstrate a cone-shaped inwall coupler for excitation of the whispering-gallery modes (WGMs) microsphere resonator. The is composed single mode fiber (SMF) and capillary with an inner diameter 5 μm. After immersing front end vertically into Hydrofluoric acid to obtain cone inside capillary, light in SMF couples efficiently while hollow core wide enough be inserted. Because face acts as reflector, Fano resonance asymmetric line shape Q-factor 2.57 × 104 observed reflection...
A high-sensitive curvature sensor based on the negative hollow core fiber (NCHCF) is proposed and demonstrated. The graded index (GIF) introduced between single-mode (SMF) NCHCF for cascaded structure of SMF-GIF-NCHCF-GIF-SMF. Compared to without GIF, coupling efficiency improved by 16.5%. For structure, multi-mode interference (MMI) anti-resonance (AR) mechanisms coexist in transmission spectra. experimental results show that MMI-based dips have a blue shift as increases while AR not...
Surface nanoscale axial photonics (SNAP) technology has demonstrated the record subangstrom fabrication precision of optical microresonators and resonant photonic circuits at fiber surface. However, errors arising from fluctuations temperature, inscription parameters, alignment inconsistencies, other factors did not allow researchers to achieve without sophisticated post-processing. Here, we show that key method SNAP structures-CO2 laser beam annealing-suffers significant displacements,...
We propose a meniscoid nested anti-resonant hollow-core fiber (MAF), wherein the fourfold rotational symmetry structure enables high birefringence and low loss in dual-wavelength range. Numerical investigation simulation for variations wall thickness along orthogonal directions are conducted, through which formulated optimization criterion revealing relationship between minimum difference of 10 −5 is obtained. A parameter beat length to ratio η defined evaluate MAF performance with respect...
Using a segment of silica capillary sandwiched by two single mode fibers (named as SMF-Capillary-SMF), we compare transmission mechanisms in various forms including multimode interference (MMI), Fabry-Perot (FP), Mach-Zehnder (MZ) and antiresonant (AR) mechanisms. The MMI mechanism can be suppressed or triggered effectively optimizing the discharge intensity propulsion distance to affect fusion surface. Various devices with different lengths inner diameters are demonstrated, where reflection...
We report a magnetic field sensor based on an optofluidic microbottle resonator (OFMBR) with whispering gallery mode (WGM) strongly confined in the axial direction, hollow core inherently easy to infiltrate fluid. The device is simply fabricated along silica capillary through fusing splicer. And influence of number discharges size analyzed according state equation ideal gas, which verified by experimental results. In range from critical value (40 Gs) saturated (300 Gs), resonant wavelength...
A simple and compact magnetic field temperature dual-parameter sensor is proposed, which based on a sandwich structure consisting of section hollow core Bragg fiber (HCBF) filled with fluid (MF) two sections single-mode (SMF). The corresponding relationship between the resonant dip different periods in transmission spectrum specific anti-resonant (AR) mode HCBF determined. dips AR modes shift differently when intensity change. Then, simultaneous measurement can be achieved by utilizing cross...
We demonstrate a simple structure for the refractive index sensing by splicing segment of capillary with two segments single-mode fibers (SMFs). By selecting appropriate parameters, mode coupling regions can be formed tapered air-cavities on both sides capillary. This allows us light propagation in ring distribution, while high-order distributed will affected surrounding environment. With inner diameter increases, there is an enhancement interaction between modes and Therefore, we realize...
Abstract Italian ryegrass ( Lolium multiflorum ) is a widely cultivated forage with high nutritional value and good palatability. Salinity, however, negative factor to lessen output quality in ryegrass. The aim of this study was elucidate the salt tolerance mechanism two cultivars, ‘Abundant’ ‘Angus’. Under hydroponic conditions, cultivars different were exposed 0 300 mM NaCl solution for 1 week, respectively. results showed that stress decreased relative growth rate water content,...
In this letter, we demonstrate a high-sensitivity flow rate sensor which is packaged using stable and convenient method. The based on an optofluidic microbottle resonator (OFMBR), serves as promising platform for fluid sensing due to its ultrahigh quality factor inherent microfluidic channel. coupling system modified method, the sensor's stability verified phosphate buffered saline at different rates. According Bernoulli effect of fluid, dynamic change velocity in OFMBR can be detected via...
We propose a compact fluorescence intensity ratio (FIR) based temperature sensor packaged in capillary with an embedded fiber microlens. It is composed of cone-shaped inwall coupling fluorescent microsphere as the emitter port, graded-index (GIF) microlens detector and large-inner-diameter package. The ports are both conjoined single mode fibers, stepped profiles formed by etching. This structure makes them freestanding aligned package capillary, improving stability device. embedding device...
Aims We studied the breeding system and pollination ecology of Meconopsis integrifolia (Papaveraceae), which is an alpine herb, for two consecutive years. Methods Five plots (plot 1, 4 452 m a.s.l; plot 2, 215 3, 081 4, 3 841 5, 3681 a.s.l) were established along altitudinal gradient in Balang Mountain. Flower longevity, stigma height highest stamen measured recorded. The receptivity pollen viability tested by Benzidine-H2O2 method TTC method, respectively. was experimental approaches,...
The coexistence of transmission mechanisms, including Fabry-Perot (FP), Mach-Zehnder (MZ), and anti-resonant (AR), is demonstrated via a silica capillary-based cascaded structure. analysis for MZ shows that one pathway formed by the beam refracted into capillary cladding from air core, rather than being transmitted directly at splicing interface. Using ray optics method, two conditions are derived FP MZ, FP, AR, respectively. existence percentages three mechanisms can be obtained using fast...
The Selective Laser Melting (SLM) technique was investigated for manufacturing of Space-Curve-Meshing-Wheel (SCMW) samples by using self-made SLM equipment. Experimental results show that, the driving and driven wheels have considerable shape accuracy size to commit continuous stable transmission.
Optofluidic resonators are capable of characterizing various fluidic media. Here, we propose an optofluidic microbottle resonator (OFMBR) that is applied to generate pendant droplets, whose maximum mass related the liquid surface tension. Mass and type droplets forming along OFMBR stem can be monitored in real time by spectrum variation. As a droplet grows, increased gravity introduces decreased coupling gap compressive force between tapered fiber OFMBR, leading resonance wavelength shift....
We demonstrate a high-sensitivity bidirectional magnetic field sensor based on packaged optofluidic microbottle resonator (OFMBR) filled with fluid (MF). The relationship between sensitivity and different wall thicknesses radial modes of OFMBR is theoretically analyzed. Then the thin-wall fabricated by etching capillary fusion discharge process. tapered fiber portable robust coupling configuration. By applying perpendicular or parallel directions to OFMBR, opposite refractive index responses...
The generating mechanism of circulating currents for direct parallel photovoltaic grid-connected inverters is analyzed in detail at first. Then state average model the constructed dq rotating coordinates. Based on this model, interaction between and influence current when it used zero vectors with space vector pulse width modulation(SVPWM) also analyzed. paper adopts a novel method based which can be effectively inhibited by controlling operation time different each PWM cycle. simulated...
A long pulse ECRH system with a goal of 140GHz 4MW 100~1000s has been developed to meet the requirement steady-state operation on EAST. Gycom gyrotrons are employed in No.1 and No.3 systems, CPI used No.2 No.4 systems. The development two gyrotron systems finished. first short EC wave injection demonstrated successfully during EAST 2015 Spring campaign. In commissioning towards operation, 0.4MW 100s injected plasma by using system, 4.7keV 102s L-mode H-mode have achieved help ECRH. Recently,...
An optical fiber sensor for simultaneous measurement of relative humidity (RH) and temperature is proposed, which constructed by sandwiching one section hollow core Bragg (HCBF) between two sections single mode (SMF). The ultrathin ZnO film coated on the outer surface HCBF as humidity-sensitive material. dips in transmission spectrum caused different anti-resonant (AR) modes have sensitivities to RH temperature, then above parameters can be realized solving a cross matrix. For monitored...
Abstract In this paper, we propose a deformed Reuleaux-triangle resonator (RTR) to form exceptional point (EP) which results in the detection sensitivity enhancement of nanoparticle. After introducing single nanoparticle RTR at EP, frequency splitting obtains an more than 6 times compared with non-deformed RTR. addition, EP induced result that far field pattern chiral mode responses significantly external perturbation, corresponding change internal chirality. Therefore, distance 4000 nm can...
Agile methods of developing software such as extreme programming (XP), are becoming increasingly important for the rapid development applications. The paper describes a system dynamics model XP process which can be used to quantitatively evaluate and studies effect practices by simulation.