A5075598541- Advanced Fiber Optic Sensors
- Advanced MEMS and NEMS Technologies
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Photonic Crystal and Fiber Optics
- Mechanical and Optical Resonators
- Adhesion, Friction, and Surface Interactions
- Force Microscopy Techniques and Applications
- stochastic dynamics and bifurcation
- Neural Networks and Applications
- Semiconductor Lasers and Optical Devices
- Laser-Matter Interactions and Applications
- Advanced Measurement and Metrology Techniques
- Photoacoustic and Ultrasonic Imaging
Zhejiang Normal University
2022-2024
Changzhou Institute of Technology
2023
Zhejiang University
2023
In this paper, a highly sensitive salinity sensor based on the virtual Vernier effect of micro-nano tapered two-mode fiber (TTMF) is proposed, theoretically analyzed, and experimentally verified. Theoretical calculations show that dispersion turning point (DTP) occurs when group effective refractive index difference between fundamental higher-order modes TTMF equal to zero, thus ultra-high sensitivity can be achieved measure seawater salinity. After considering robustness sensor, cone size...
A simple and novel hybrid interferometer based on the antiresonance (AR) effect Mach–Zehnder interference (MZI), which enables simultaneous measurement of temperature strain, is proposed investigated. The sensor made by cascading a 30 cm section few-mode fiber (FMF) 3.376 mm hollow-core (HCF) through single-mode (SMF). FMF SMF are fused without misalignment to excite two stable modes, thereby forming interferometer. Concurrently, introduction HCF can effectively AR effect, manifested in...
This article presents a novel approach for enhancing the sensitivity of fiber optic sensors through utilization simulated reference arm (SRA) technique and optical harmonic Vernier effect. Unlike traditional methods that rely on physical arms, this achieves effect by using single interferometric sensor, offering advantage adjustable sensitivity. Specifically, multimode interferometer (MMI) is constructed few-mode (FMF) as sensing arm. Real-time implementation SRA demonstrated, resulting in...
In recent years, the Vernier effect has received much attention from researchers in field of fiber sensing because its ability to improve measurement sensitivity significantly. However, two prominent problems occur when it is used for strain sensing: low extinction ratio (ER) and high-temperature cross-sensitivity. A compact sensor based on with advantages high sensitivity, ER, low-temperature cross-sensitivity proposed this study. The Fabry–Perot interferometer (SFPI) utilizes a hollow-core...
A fiber-optic strain sensor with antiresonance suppression was proposed, and sensitization achieved by constructing a simulated reference interferometer (SRI) using the Vernier effect. In capillary-based Fabry–Perot (FPI), resulted in uneven contrast of reflection spectrum, which could not meet conditions for use addition to controlling length capillary below critical overcome this problem, be suppressed increasing thickness. sensitivity 14.58 pm/ <inline-formula...
In the field of engineering, deformation and lateral stress in structural health detection have attracted extensive attention to obtain information building objects time. Based on birefringence effect PMF, a transverse pressure sensor based Sagnac cascade FBG was proposed prepared. The performance is analyzed by combination finite element method experiment. simulation results show that cross section PMF deformed under along fast axis slow then modulates refractive index. experimental adding...
Using a taper photonic crystal fiber (TPCF) structure, Mach-Zehnder interference (MZI) refractive index (RI) sensor is presented in this study. Sensors with different waist diameters (TWDs) are then theoretically examined and experimentally investigated. The consists of single-mode (SMF) -taper -SMF. When the RI external environment changes, optical path difference between core mode cladding will change accordingly. By monitoring drift spectrum, can be detected, achieving purpose sense....
A cascaded micro fiber Sagnac ring displacement sensor based on Vernier effect is proposed and studied in this paper. single-mode optical wound into a with diameter of about 10cm, obtained by fused tapering the winding area, another slightly different coupling length fabricated same process. The transmission spectrum each similar to scale. sensitivity can be improved through after two rings are fiber. mode analyzed using finite element analysis software. Its calculated numerical simulation,...
Using a taper photonic crystal fiber (TPCF) structure, Mach-Zehnder interference (MZI) refractive index (RI) sensor is presented in this study. Sensors with different waist diameters (TWDs) are then theoretically examined and experimentally investigated. The consists of single-mode (SMF) -taper -SMF. When the RI external environment changes, optical path difference between core mode cladding will change accordingly. By monitoring drift spectrum, can be detected, achieving purpose sense....