Review of optical fiber bending/curvature sensor

Q Wang, Y Liu - Measurement, 2018 - Elsevier
A review for optical fiber bending sensors is presented. The article mainly focuses on the
measurement methods of the structure bending. Firstly, the different optical fiber bending …

Advances in multicore fiber interferometric sensors

Y Yao, Z Zhao, M Tang - Sensors, 2023 - mdpi.com
In this paper, a review of multicore fiber interferometric sensors is given. Due to the
specificity of fiber structure, ie, multiple cores integrated into only one fiber cladding …

Deep learning based optical curvature sensor through specklegram detection of multimode fiber

G Li, Y Liu, Q Qin, X Zou, M Wang, F Yan - Optics & Laser Technology, 2022 - Elsevier
An optical fiber curvature sensor based on the detection of specklegrams from the facet of
multimode fiber (MMF) is realized by using a deep learning regression model. Since the …

Ultrasensitive vector bending sensor based on multicore optical fiber

J Villatoro, A Van Newkirk, E Antonio-Lopez, J Zubia… - Optics Letters, 2016 - opg.optica.org
In this Letter, we demonstrate a compellingly simple directional bending sensor based on
multicore optical fibers (MCF). The device operates in reflection mode and consists of a short …

Selective fiber Bragg grating inscription in four-core fiber for two-dimension vector bending sensing

W Bao, N Sahoo, Z Sun, C Wang, S Liu, Y Wang… - Optics …, 2020 - opg.optica.org
The paper presents selective fiber Bragg grating (FBG) inscription in four-core fiber based
on a phase mask scanning method. The inscription factors are systematically investigated …

All-fiber MZI sensor based on seven-core fiber and fiber ball symmetrical structure

H Li, H Li, F Meng, X Lou, LQ Zhu - Optics and Lasers in Engineering, 2019 - Elsevier
An all-fiber and compact Mach-Zehnder interferometric (MZI) sensor is proposed and
experimentally demonstrated. The sensor with symmetrical structure is fabricated by splicing …

Integrated fiber-optic sensor based on inscription of FBG in seven-core fiber for curvature and temperature measurements

Y Liu, Y Feng, J Wen, L Huang, J Dong - Optical Fiber Technology, 2023 - Elsevier
An integrated fiber-optic sensor with cross-sensitivity elimination effect is proposed and
experimented for simultaneous measurements of curvature and temperature. The sensor …

Miniature multicore optical fiber vibration sensor

J Villatoro, E Antonio-Lopez, A Schülzgen… - Optics Letters, 2017 - opg.optica.org
We demonstrate a compact and versatile interferometric vibration sensor that operates in
reflection mode. To build the device, a short segment of symmetric strongly coupled …

Femtosecond laser-inscribed off-axis high-order mode long-period grating for independent sensing of curvature and temperature

R Zhao, H Liu, X Shu - Optics express, 2022 - opg.optica.org
We propose and demonstrate a novel curvature and temperature sensor based on an off-
axis small-period long-period fiber grating (SP-LPG) which is inscribed in a single mode …

All-fiber multipath Mach⬜ Zehnder interferometer based on a four-core fiber for sensing applications

C Li, T Ning, C Zhang, J Li, C Zhang, X Wen… - Sensors and actuators A …, 2016 - Elsevier
A novel, simple and compact optical fiber sensor based on multipath Mach-Zehnder
interferometer (m-MZI) is proposed and experimentally demonstrated. The device consists of …