A5100384865- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Advanced MEMS and NEMS Technologies
- Analytical Chemistry and Sensors
- Fault Detection and Control Systems
- Advanced Sensor Technologies Research
- Gas Sensing Nanomaterials and Sensors
- Power Transformer Diagnostics and Insulation
- Advanced Fiber Laser Technologies
- Photoacoustic and Ultrasonic Imaging
- Electrical and Bioimpedance Tomography
Hainan University
2021-2023
North University of China
2022
Harbin Institute of Technology
2017
National University of Defense Technology
2015
In this paper, a high-fineness fiber-optic Fabry-Perot high-temperature pressure sensor, based on MEMS technology, is proposed and experimentally verified. The Faber-Perot cavity of the sensor formed by anodic bonding sensitive silicon diaphragm Pyrex glass; interference signal obtained coating interface surface with high-reflection film, so as to simplify demodulation system. experimental results show that sensitivity 55.468 nm/MPa, temperature coefficient 0.01859 nm/°C at 25~300 °C. has...
An integrated and robust fiber-optic Fabry–Perot (FP) humidity sensor based on the metal–organic framework (MOF) material FIR-53 is presented characterized for first time, along with its implementation method. Noticeably, crystal was chosen as moisture-sensitive material, due to large porosity chemical tailorability. By connecting single-mode fiber (SMF) using polydimethylsiloxane (PDMS) rationally, our sensor, whose FP cavity formed by FIR-53, monitors spectrum peak shift caused change. The...
A miniaturized fiber bragg grating accelerometer based on a thin polyurethane shell is designed and tested. The FBG spring-mass structure. elastic body cylindrical shell. By inserting the mass into inner of shell, axial size reduced by half compared with traditional ones in which masses are exposed outside. theoretical performance limit discussed. Test results show has similar sensing as one. Size Φ23 mm × 17 mm, sensitivity over flat frequency response zone 54 pm/g, resonant 480 Hz....
To deeply analyze the influence of diaphragm materials on temperature and pressure sensitivity Fabry–Perot interferometer-based dual-parameter fiber sensors, multiple transfer method was used to fabricate dual cavities, respectively, consisting following combinations: epoxy resin AB/polydimethylsiloxane (PDMS), Ecoflex0030 silicone rubber /PDMS, PDMS/Ecoflex0030 rubber. Experimental results show that sensitivities are, 528, 540, 1033 pm/°C in range 40–100 °C. Within applied 100–400 kPa,...
In order to effectively enhance the sensitivity and response range of optical fiber Fabry–Pérot (FP) ultrasonic sensors, this article proposes an implementation method FP sensor with a controllable cavity length variable diaphragm. On basis optimizing viscosity coefficient polydimethylsiloxane (PDMS) material, PDMS diaphragm thickness ranging from 20 60 µm is fabricated on end face Φ200/128 hollow glass tube using multiple transfer method. Then, piece Φ125 single-mode threaded into other...
Much less electroosmotic pressure experiments were conducted than streaming potential on rock samples in laboratory. This is because the signal rather weak and usually covered by stronger background noise. In this work, two transducers are used with a differential method to improve signal-to-noise ratio of pressure. The measurement transducer records when an electric voltage applied sample. A reference record To account for response difference between transducers, algorithm proposed get...