A5101544856- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Semiconductor Lasers and Optical Devices
- Constructed Wetlands for Wastewater Treatment
- Wastewater Treatment and Nitrogen Removal
- Advanced Measurement and Detection Methods
- Industrial Technology and Control Systems
- Phosphorus and nutrient management
- Simulation and Modeling Applications
- Evaluation and Optimization Models
- Water Treatment and Disinfection
- Optical Systems and Laser Technology
- Advanced biosensing and bioanalysis techniques
- Analytical Chemistry and Sensors
- Catalytic Processes in Materials Science
- Advanced Fiber Laser Technologies
- Pharmaceutical and Antibiotic Environmental Impacts
- Photonic Crystal and Fiber Optics
- Face recognition and analysis
- Probabilistic and Robust Engineering Design
- Vehicle License Plate Recognition
- Environmental remediation with nanomaterials
- Random lasers and scattering media
- Engineering Applied Research
- Transportation Safety and Impact Analysis
Anhui University
2016-2025
Southwest University
2022-2024
Northeast Agricultural University
2024
Baidu (China)
2024
Tongji University
2017-2023
State Key Laboratory of Pollution Control and Resource Reuse
2017-2023
Shanxi Datong University
2022
Guangdong University of Technology
2020
Research Institute of Highway
2010-2019
Beijing University of Technology
2019
A phase-shifted demodulation technique with a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>3</mml:mn> </mml:mrow> <mml:mo>×</mml:mo> </mml:math> coupler and ellipse fitting algorithm (EFA) for the interrogation of interferometric sensors is proposed. To reduce error EFA as to measure small phase signals, additional modulation introduced. The provides walk operating point along Lissajous large enough permit calculation...
A single-wavelength passive phase-shifted demodulation technique for the interrogation of a diaphragm-based fiber sensor is proposed. It based on configuration external Fabry–Perot interferometer (EFPI) with dual-cavity (DC) and ellipse-fitting algorithm (EFA). The can address two main concerns: orthogonality DC-EFPI must be matched, direct current values fringe visibility DC–EFPI excluded or normalized. Experiment results show that proposed demonstrates high accuracy amplitude measurement...
Abstract This paper proposes a continuously tunable random lasers (RLs) based on the gain system of cellulose nanocrystals (CNCs)-doped hydrogels and laser dye made Rhodamine B (Rh B). Between them, prepared CNCs-doped have not only weak scattering structure that can provide excellent multiple scattering, thus yielding large gain, but also good mechanical properties great advantages in tuning RL. The experimental results indicate RL emission wavelength blue shifts with an increase stretching...
Phase-difference sensing technology (PDST) has been applied to strain measurement, but its completeness is destroyed by the phase-difference measurement range. A scheme that can realize of PDST for low-frequency interrogation proposed. It built on dual-interferometers and elliptic-fitting algorithm. To break range limitation (0, π), a phase compensation setting applied. The experimental results demonstrate method obtain signals, signal whose amplitude greater than π recovered. an efficient...
Based on the multi-sensor system, one energy-saving control method is provided to extend working period of solar street lamp. The system applies infrared and sound sensors collect recognize signal man body, then controls switch time lamp based lighting-control method, adjusts output power lighting luminance dynamically. This new in this paper optimizes distribution storage batteries, achieves purpose extending period.
A quantum dots optical fiber (QDOF) sensor is proposed for temperature sensing in this paper. The fabricated by the drop-on-demand inkjet printing technology. By controlling diameter of droplet, spacing between droplets and number printed layers, QDOF on polymer substrate. loss less than 0.35 dB·mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> at fluorescence wavelength. experimental results show that sensitivity 109 pm/ °C. As far as...
Phase difference sensing technology (PDST) is employed for topography measurement, and two interference structures are proposed to achieve upper-limit adjustment high resolution in the measurement range: a dual-wavelength system with single Fabry-Perot (FP) cavity single-wavelength dual FP cavities. The phase between signals determined by an elliptic fitting algorithm (EFA), this change utilized characterize step height. Experimental results indicate that can be adjusted either 410 µm, 187...
The compositions and contents of phases in cement paste soaked sodium sulfate solution changing with time were investigated this study. First all, the porosities specimens over measured by an situ X-ray computed tomography (X-ray CT) test. Cement hydration erosion occur simultaneously during soaking process solution. Therefore, behaviour sulfates combined a new way to establish X-CT–hydration–deterioration model, which was used calculate variations volume fractions paste. Subsequently, each...