A5027122370- Advanced Fiber Optic Sensors
- Flow Measurement and Analysis
- Image Enhancement Techniques
- Optical measurement and interference techniques
- Advanced Image Processing Techniques
- Advanced Sensor Technologies Research
- Advanced Measurement and Metrology Techniques
- Advanced Measurement and Detection Methods
- Limits and Structures in Graph Theory
- Optical Systems and Laser Technology
- Finite Group Theory Research
- Advanced Database Systems and Queries
- Analytic Number Theory Research
- Analytical Chemistry and Sensors
- Data Management and Algorithms
- Image and Signal Denoising Methods
- Algorithms and Data Compression
- Advanced Optical Sensing Technologies
- Mechanical and Optical Resonators
- Photonic and Optical Devices
- Ocular and Laser Science Research
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2024
Shandong University of Science and Technology
2023-2024
Shandong University
2010-2022
Shanghai Center for Brain Science and Brain-Inspired Technology
2022
An integrated interferometric fiber optic velocimetry sensor has been proposed and demonstrated at the central wavelength of 638 nm. The is based on principle two laser-beams' interference. light signal scattered from particles or vapor demodulated to measure water surface velocity velocity. Three measurement experiments are carried out velocity, experimental data shows that increases linearly in range 4 mm·s-1 100 mm·s-1, with a slope linear fitting curve 0.99777 R-Square 1.00000....
An integrated optical waveguide-type laser velocimeter has been proposed and demonstrated at the central wavelength of 1550 nm. The micro-fabricated photo-lithographically defined sensor head dimensions in range 0.25 mm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\times3.50$ </tex-math></inline-formula> mm. velocities notation="LaTeX">$5.0\times 10 ^{-2} \mu \text{m}\cdot \text{s}$ <sup...
This study presents a two-beam interferometric velocimeter based on the measurement of scattered light from particles in air and natural seawater. A 638 nm narrow-linewidth diode laser was deployed as source. By optimal design spatial components receiver, receiving efficiency enhanced significantly that enabled weaker scattering signal Such velocimetry calibrated by both rotating disk towing sliding rail water tank. It has demonstrated experimentally range 0.00565–31.29 <inline-formula...
We present a new algorithm to evaluate XML twig queries. The uses the region encoding determine whether two or more nodes have common ancestor, and set of novel indices reduce number comparisons needed for query evaluation. together transform join operation an intersection between contributing paths inside query. In this paper, we propose our technique experimentally its performance.
To meet the requirements of miniaturization, low cost and high stability Laser Doppler seawater velocity measurement, a closed-loop feedback laser drive method was studied to achieve voltage-controlled constant current source based on operational amplifier. The temperature collected controlled by thermal-electric-cooler (TEC). Proportional-Integral-Differential (PID) algorithm used set temperature, so as realize control temperature. experimental results show that output optical power system...
Deep ultraviolet (deep-UV, 200nm~300nm) spectrum analysis is an important technique in underwater biochemical sensors. For in-situ exploration, integrated optics based wavelength selective light source would have advantages obtaining high sensitivity spectrum, compactness and low power consumption. The key components used forming such are optical switch bandpass filters. However, filter deep-UV band rarely been studied, to our best knowledge. In this paper, we proposed designed a...
<abstract><p>Let $ N be a sufficiently large integer. In this paper, it is proved that, with at most O\big(N^{4/9+\varepsilon}\big) exceptions, all even positive integers up to can represented in the form p_1^2+p_2^3+p_3^3+p_4^3+p_5^3+p_6^3 $, where p_1, p_2, p_3, p_4, p_5, p_6 are prime numbers.</p></abstract>