A5009876715- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Water Quality Monitoring Technologies
- Analytical Chemistry and Sensors
- Advanced Fiber Laser Technologies
- Water Quality Monitoring and Analysis
- Semiconductor Lasers and Optical Devices
- Plasmonic and Surface Plasmon Research
- Flow Measurement and Analysis
- Underwater Acoustics Research
- Advanced Photonic Communication Systems
- Photoacoustic and Ultrasonic Imaging
- Photonic Crystal and Fiber Optics
- Underwater Vehicles and Communication Systems
- Optical Coatings and Gratings
- Advanced biosensing and bioanalysis techniques
- Laser-Matter Interactions and Applications
- Advanced Sensor Technologies Research
- Marine and coastal ecosystems
- Optical measurement and interference techniques
- Ultrasound Imaging and Elastography
- Oceanographic and Atmospheric Processes
- Power Quality and Harmonics
- Power Systems and Technologies
- Advanced Nanomaterials in Catalysis
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2022-2025
Shandong University
2018-2025
Shandong University of Science and Technology
2019-2025
Qingdao National Laboratory for Marine Science and Technology
2023-2024
Marine Biology Institute of Shandong Province
2021
Qingdao Institute of Marine Geology
2021
Qingdao Binhai University
2018
National Taiwan University of Science and Technology
2013-2015
University of Connecticut
2001
Jet Propulsion Laboratory
1982-1998
The ocean covers approximately 71% of the Earth's surface, acting as largest heat reservoir with abundant natural resources and a complex ecosystem. As fundamental hydrological parameter, temperature fluctuations not only affect measurement other parameters but also profoundly impact climate, ecosystems, land-ocean interactions. Therefore, long-term precise monitoring seawater is essential. This study evaluates stability NTC thermistor sensors, which are widely used for marine measurements....
The ocean, as Earth's largest thermal energy reservoir, plays a vital role in regulating the global climate. Slight changes ocean temperature due to warming can intensify extreme weather events, cause rising sea levels, and threaten biodiversity. Accurate monitoring of variations is therefore critical for understanding climate change circulation dynamics. This study focuses on calibrating thermistor-based sensors commonly used measurements. Calibration experiments were performed across range...
This paper extensively investigates the performance of representative SBE 3 deep-sea thermometer (Sea-Bird Scientific) under various stepwise pressure conditions. A high-precision pressure-temperature vessel was employed to simulate deep sea environments, conducting systematic experiments with precise temperature control (0.5 mK) across a range -2 35°C and from atmospheric full ocean depth (0–12700 m). Standard platinum resistance (SPRT), isolated environment placed adjacent 3, served as...
A high-resolution and large-dynamic-range temperature sensor adopting a pair of fiber Bragg grating as Fabry–Pérot cavity (FBG-FP) laser frequency dither locking method is proposed experimentally demonstrated. This exhibits resolution 7×10 −4 °C dynamic range ∼46 °C. It especially useful for applications where very small changes need to be detected, such deep ocean measurement.
MoS₂ quantum dots (QDs) functionalized g-C₃N₄ nanosheets (MoS₂@CNNS) were prepared through a protonation-assisted ion exchange method, which developed as highly efficient biomimetic catalyst. Structural analysis revealed that uniformly-dispersed QDs with controllable size and different loading amount grew in-situ on the surface of CNNS, forming close-contact MoS₂@CNNS nanostructures exhibiting distinct properties. Compared to nanocomposites exhibited more than four times stronger...
A high-resolution and wide-range pressure sensor based on π phase-shifted fiber Bragg grating (π-FBG) encapsulated with metal thin-walled cylinder is reported. The has been tested a wavelength-sweeping distributed feedback laser, photodetector H 13 C 14 N gas cell. To perceive temperature synchronously, pair of π-FBGs are glued the outer wall along circumferential direction different angles. interference effectively corrected by high-precision calibration algorithm. reported sensitivity 4.42...
Ocean salinity plays an important role in oceanographic research as one of the fundamental parameters. An optical salinometer based on Michelson interferometer (MI) suitable for situ measurement deep-sea environments is proposed this work, and it features real-time calibration multichannel multiplexing using frequency modulated continuous wave (FMCW) technique. The symmetrical sapphire structure used to withstand pressure can not only achieve automatic temperature compensation, but also...
A novel electro-optic modulator based on graphene silicon (GoS) dual-slot waveguide is proposed, utilizing the electro-absorption and electro-refraction effect of graphene. The optical mode in can interact strongly with upper layer due to enhancement light intensity poor confinement nanometer slot. real part imaginary effective modal index relate propagation phase attenuation, respectively. Electro-absorption modulators be realized by reasonably tuning chemical potential through an applied...
Abstract A waveguide coupled surface plasmon sensor for detection of liquid with high refractive index (RI) is designed based on polymer materials. The effects variation the thickness Au film, polymethyl methacrylate (PMMA) buffer, and layer sensing performance are comprehensively investigated by using finite difference method. Numerical simulations show that a thinner gold film gives rise to more sensitive structure, while PMMA buffer has little effect sensitivity. For RI, sensitivity...
Compact high-performance electro-optic (EO) modulators are key elements for optical communications. An electro-absorption modulator is theoretically designed. Due to the introduction of graphene film over silicon slot waveguide, modulation efficiency strongly improved. The effect waveguide dimensions, dielectric insulator thickness, and carrier mobility on performances proposed EO have been comprehensively investigated. For 120-μm-long graphene-on-silicon modulator, extinction ratio 28 dB...
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....
The accuracy of the in situ nitrate measurement seawater is affected by many environmental factors, such as salinity, temperature, and turbidity. Along these lines, this work, an correction (including turbidity) algorithm was proposed experimentally verified, demonstrating a good prediction concentration. orthogonal projection to latent structures (OPLS) used for performing one-time turbidity temperature acquired spectral data. After correction, support vector machine (SVM) establish...
Dissolved organic matter (DOM) in seawater, consisted of a complex mixture compounds and accounted for about 90% marine carbon, is an important part the global carbon cycle also absolute salinity seawater. As components DOM are non-ionized electric conductivity measurement cannot observe its contribution to salinity, which could lead error salinity. Salinity based on optic refractive index reveal all dissolved matters seawater including both ionized components. In this paper, comparative...