A5014270871- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Surface Roughness and Optical Measurements
- Photonic Crystal and Fiber Optics
- Advanced MEMS and NEMS Technologies
- Mechanical and Optical Resonators
- Advanced Sensor and Control Systems
- Advanced Decision-Making Techniques
- Magneto-Optical Properties and Applications
- Advanced Measurement and Detection Methods
- Simulation and Modeling Applications
Harbin Institute of Technology
2022-2024
Shandong Entry-Exit Inspection and Quarantine Bureau
2024
A high-temperature measurement fiber sensor based on the Vernier effect is proposed and demonstrated. The comprises two parallel Fabry–Perot interferometers (FPIs) constructed by splicing of single-mode (SMF) a micrometer-scale dimensions suspended-core (SCF). These possess high degree symmetry both packaged with hollow core (HCF) to provide resistance against external pollution. HCF charged collapse other side, but length SCF differs between them. High-temperature tests were conducted...
In this article, an anti-jamming high-temperature sensor up to 1000 °C based on optical fiber in-line Mach–Zehnder interferometer (MZI) structure fabricated by cutting and splicing single-mode (SMF), multimode (MMF), suspended core (SCF) consisting of pure silica material a sandwich-like compact under optimized discharge parameters is proposed. The MMFs function as light coupler the modes air cladding are excited interference. A temperature response 45.75 pm/°C achieved, due significant...
This paper presents a novel composite vector bending sensing system capable of switching freely between wavelength and intensity modulation. The fundamental unit the depends on an offset rotation twisted Mach-Zehnder Interferometer (TW-MZI) with unique refractive index (RI) distribution characteristics proven through experiments. delivers remarkable performance in modulation, reaching maximum 18.74 ± 0.01 dB/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Fast and stable phase control is essential for many applications in optics. Here, we propose an all-fiber all-optical modulation scheme based on a Fabry–Perot interferometer (FPI) Er/Yb co-doped fiber (EYDF). By using the EYDF as F-P cavity via rational design, shift with sensitivity of 0.0312π/mW introduced to modulator. The shifts consist thermal nonlinear ratio 19:1, corresponding temporal responses are 204 ms 2.5 ms, respectively. In addition, compact FPI encapsulated provide excellent stability
This paper presents the design of a strain-sensitive, dual ball-shaped tunable zone (DBT) taper structure for light intensity modulation. Unlike conventional tapered optical fibers, DBT incorporates central field modulation within taper. By precisely controlling fusion parameters between single-mode fiber (SMF) and polarization-maintaining (PMF), ellipticity can be finely adjusted, thereby optimizing spectral characteristics. Theoretical analysis based on polarization mode interference (PMI)...
A novel scheme for improving the resolution of temperature sensor using fast and slow light in a fiber resonator is proposed demonstrated experimentally. In measurement system, shift resonance wavelength produced by change can be converted into strong variations delay time. By measuring time, this we has high-temperature sensitivity. Different from traditional method tracing spectrum, detection carried out an oscilloscope, which results with response high resolution. Moreover, sensitivity,...
Abstract A novel all-optical scheme for fast modulation of Fano-like resonance using Er/Yb doped fiber (EYDF) is proposed and demonstrated experimentally. In the integrated system, an apodized Bragg grating (AFBG) inserted into one arm Mach–Zehnder interferometer (MZI), asymmetric resonances generated by interference between MZI mode AFBG mode. addition, a section EYDF other to control phase difference two arms MZI. By adjusting power optical pump applied EYDF, transmission spectrum...
In this paper, we propose and demonstrate a miniature high-temperature fiber-optic sensor based on tip-packaged Fabry-Perot interferometer which is insensitive to changes in external refractive index can maintain good temperature sensing characteristics. The built by splicing piece of suspended-core optical fiber (SCF) single mode (SMF). addition, two packaging methods. One packaged section hollow core (HCF) whose the other end discharged form tapered structure SMF. sensitivities these...