Recent advances in multidimensional fiber Bragg grating accelerometers

R Wang, Y Li, X Qiao - Journal of Lightwave Technology, 2023 - ieeexplore.ieee.org
Fiber Bragg grating (FBG) accelerometers measure vibrations by demodulating wavelength
shifts induced by dynamic strain. Their high-temperature resistance and multiplexing …

Ultra-high-resolution phase demodulation based miniature fiber-optic accelerometer at low and medium frequencies

J Huang, Y Zhang, M Guo, G Zhang, X Zhao, C Li… - Optics & Laser …, 2024 - Elsevier
A miniature fiber-optic Fabry–Perot (FP) accelerometer based on phase demodulation is
demonstrated for improving sensitivity. The accelerometer is composed of a 11.5 mm …

Sensitivity enhanced vector accelerometer based on FBG-FP inscribed on multicore fiber

J Wang, F Chen, R Zhou, R Wang, X Qiao - Applied Optics, 2023 - opg.optica.org
We propose and fabricate a high-sensitivity vector vibration accelerometer with a multicore
fiber Bragg grating Fabry–Perot (FBG-FP) structure. The acceleration sensitivities of the FBG …

Temperature-Decoupled Single-Crystal MgO Fiber-Optic Fabry–Perot Vibration Sensor Based on MEMS Technology for Harsh Environments

C Su, P Jia, A Zhao, J Tu, J Liu, Q Ren, J Xiong - Micromachines, 2024 - mdpi.com
A high-temperature-resistance single-crystal magnesium oxide (MgO) extrinsic Fabry–Perot
(FP) interferometer (EFPI) fiber-optic vibration sensor is proposed and experimentally …

Strong cladding mode excitation in ultrathin fiber inscribed Bragg grating with ultraviolet photosensitivity

D Feng, Z Li, H Zheng, B Jiang, J Albert, J Zhao - Optics Express, 2022 - opg.optica.org
Strong UV-written Bragg gratings written in 50 µm-diameter cladding single mode fibers
compatible with conventional fiber couple core guided light to dozens of cladding modes …

Sensitivity Enhancement of Fiber-Optic Accelerometers Based on the Weak Fiber Bragg Grating Array by Inscribing in Thin-Cladding Fiber

X Li, F Geng, S Li, X Liu, T Duan… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
In this paper, we propose and demonstrate a method for enhancing the sensitivity of
accelerometers using a thin-cladding weak fiber Bragg grating (WFBG) array. Compared to …

High-integration multiplexable vector accelerometer based on FBGs inscribed in seven-core fiber with silicone compliant cylinder

R Zhou, W Hu, C Yi, Y Li, Y Su, R Wang… - IEEE Sensors …, 2022 - ieeexplore.ieee.org
Multiplexing technology is important when realizing multipoint measurement. We propose a
vector accelerometer based on a silicone rubber compliant cylinder, which makes it easy to …

Advanced suspended-core fiber sensor for seismic physical modeling

Z Shao, K Zhou, H Yin, X Yang, X Qiao - Optics Express, 2022 - opg.optica.org
A micro ultrasonic sensor based on an advanced suspended-core fiber is proposed and
employed for in-lab seismic physical modeling. A free suspended core is obtained by acid …

Study on the effects of organic bonding agent and low-temperature glass solder process on the performance of compact packaged fiber optic temperature sensors

C Li, X Tong, W Huang, F Zeng, Y Wang… - IEEE Sensors …, 2024 - ieeexplore.ieee.org
In this study, organic bonding agent and low-temperature glass solder bonding are selected
to prepare compact fiber Bragg grating (FBG) temperature sensors, and then temperature …

Magnetic flux leakage detection based on a sensitivity-enhanced fiber Bragg grating magnetic field sensor

Q Qin, W Zhu, B Xi, T Yang, R Wang, X Qiao - Applied Optics, 2023 - opg.optica.org
We propose a sensitivity-enhanced fiber Bragg grating (FBG) magnetic field sensor for
magnetic flux leakage (MFL) detection. The testing system consists of the FBG, suspended …