A5103227928- Advanced Fiber Optic Sensors
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Photonic and Optical Devices
- Advanced Sensor and Control Systems
- Spectroscopy and Laser Applications
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Chemical Sensor Technologies
- Photonic Crystal and Fiber Optics
- Magneto-Optical Properties and Applications
- Photonic Crystals and Applications
- Transition Metal Oxide Nanomaterials
- Mechanical and Optical Resonators
- Fiber-reinforced polymer composites
- Geophysics and Sensor Technology
- Concrete Corrosion and Durability
- Metamaterials and Metasurfaces Applications
- Silicone and Siloxane Chemistry
- Structural Load-Bearing Analysis
- Advanced materials and composites
- Electromagnetic wave absorption materials
- MXene and MAX Phase Materials
- Polydiacetylene-based materials and applications
- Adhesion, Friction, and Surface Interactions
Wuhan University of Technology
2015-2024
PRG S&Tech (South Korea)
2024
Advanced Energy (United States)
2024
Dalian University of Technology
2013-2019
Hefei University of Technology
2015
Different from usually-used bulk magnetostrictive materials, TbDyFe thin films were firstly proposed as sensing materials for fiber-optic magnetic field characterization. By magnetron sputtering process, deposited on etched side circle of a fiber Bragg Grating (FBG) element. There exists more than 45pm change FBG wavelength when magnet increase up to 50 mT. The response is reversible, and could be applicable current sensing.
Abstract To guarantee the normal operation of next generation portable electronics and wearable devices, together with avoiding electromagnetic wave pollution, it is urgent to find a material possessing flexibility, ultrahigh conductive, superb interference shielding effectiveness (EMI SE) simultaneously. In this work, inspired by building bricks toy interlock system, we design fabricate copper/large flake size graphene (Cu/LG) composite thin film (≈8.8 μm) in light high temperature...
WO3-Pd composite films were deposited on the side-face of side-polished fiber Bragg grating as sensing elements by magnetron sputtering process. XRD result indicates that are mainly amorphous. Compared to standard FBG coated with same hydrogen sensitive film, significantly increase sensor's sensitivity. When concentrations 4% and 8% in volume percentage, maximum wavelength shifts 25 55 pm respectively. The experimental results show response is reversible, sensor has great potential...
An optical fiber humidity sensor with porous anodic alumina (PAA) film on single-mode tip is proposed and experimentally demonstrated. Relative-humidity (RH) sensing correlated the shift of interference fringe due to capillary condensation, which results in change effective refractive index PAA when exposed different RH environments. Experimental result shows that sensitivity 0.31 nm/%RH can be realized very good repeatability range 20%RH-90%RH. It concluded fiber-optic sensors thinner...
A novel relative humidity (RH) sensing network based on ultra-weak fiber Bragg gratings (FBGs) is proposed and demonstrated. Experiment demonstrated a 5 serial FBGs chopped from array with 1124 FBGs. Experimental results show that the corresponding RH sensitivity varies 1.134 to 1.832 pm/%RH when ambient environmental changes 23.8%RH 83.4%RH. The low-reflectance time-division multiplexing (TDM) technology makes it possible multiplex thousands of sensors in single optical fiber.
A highly sensitive optical fiber Sagnac interferometer hydrogen sensor is proposed and demonstrated. The device fabricated by inserting a segment of panda coated with Pt-loaded WO3/SiO2 into loop. When Pt/WO3 film exposed to hydrogen, the exothermic reaction raises temperature fiber, resulting in resonant wavelength shift interferometer, dip obtained has large extinction ratio ∼25 dB narrow linewidth 2.5 nm. Such responds fast exhibits high sensitivity -7.877 nm/% (vol. %) within range...
In this paper, WO3-Pd2Pt-Pt nanocomposite films were deposited on a single mode fiber as the hydrogen sensing material, which changes its reflectivity under different concentration. The variation was probed and converted to an electric signal by pair of balanced InGaAs photoelectric detectors. addition, performance composite film investigated optical powers, irrigating power optimized at 5 mW. With irrigation power, sensitive exhibits quick response toward 100 ppm in air atmosphere room...
In this paper, a femtosecond laser fabricated fiber inline micro Mach-Zehnder interferometer with deposited palladium film for hydrogen sensing is presented. Simulation results show that the transmission spectrum of critically dependent on microcavity length and refractive index Pd short corresponds to high sensitivity. The experimental obtained in wavelength region 1200-1400 nm, concentration range 0-16%, agree well simulations. developed system has potential
The combination of fiber optics with nano-structure technologies and sensitive thin films offers great potential for the realization novel sensor concepts. Miniatured optical sensors as elements could open new fields applications. Thin work transducer to get response feedback from environments, in which fibers are employed signal carrier. This article presents some research conducted at National Engineering Laboratory Optical Fiber Sensing Technologies recent years. Concrete examples are:...
A multilayer-based fiber optic sensor enabling simultaneous measurement of humidity and temperature is proposed demonstrated. The sensitive elements were multilayer coatings consisting nano-porous TiO(2) SiO(2) films, which deposited on end-face to form a Fabry-Perot (F-P) filter structure. Relative-humidity (RH) sensing correlated with the shift interference fringe due change effective refractive index porous when exposed different RH environments. sealed in glass tube case measurement....