Explanipedia

Single-peak femtosecond laser written cobalt-doped FBG for hot-wire anemometry Open

Minghui He, Tianxi Zhang, Tianxin Duan, H. Ji, Ruohui Wang , et al. · 2025

This study presents a hot-wire anemometer (HWA) using a multimode cobalt-doped fiber Bragg grating (MCDF-FBG) with a single reflection peak. A short FBG was inscribed into the MCDF using femtosecond laser direct writing technique to fabric…

Engineered cladding scatterers in optical fiber for 3D deformation encoding Open

Xueguang Qiao, Pengtao Luo, Fengyi Chen, Xueguang Qiao · 2025

Fiber-optic deformation sensors offer a promising solution for precise navigation in soft robotics. However, the inherent limitations of traditional sensing mechanisms present a persistent trade-off between sensor miniaturization and spati…

All-optical-fiber highly sensitive hot-wire flowmeter based on FPI vernier effect in cobalt-doped fiber Open

Tianxi Zhang, Minghui He, H. Ji, Ruohui Wang, Dan Su , et al. · 2025

An all-optical-fiber hot-wire flow sensor is proposed for measuring extremely low flow velocities in air and water. The sensor detects flow velocity changes by measuring heat loss. A femtosecond laser is used to inscribe the hot-wire verni…

Mmf-Scf Based In-Fiber Interferometer for Finger Bending Monitoring Open

Min Shao, X. Zhang, Yubo Yuan, Zhengwei Wang, Yinggang Liu , et al. · 2025

Optical fiber sensor for wearable and accurate human respiratory monitoring Open

Min Shao, Yubo Yuan, Manyin Wang, Yinggang Liu, Xueguang Qiao · 2024

Accurate respiratory monitoring is of great significance in assessing and analyzing physical health, and preventing respiratory diseases. The recently emerged wearable respiratory sensors are confronted with the challenges such as complex …

Advanced fabrication of polymer waveguide interferometric sensor utilizing interconnected holey fibers Open

Zhihua Shao, Jing Liu, Kuangyu Zhou, Ziyu Zhang, Ruiming Liang , et al. · 2024

A universally applicable approach is proposed for the fabrication of fiber-optic polymer sensors. The hollow-core fibers (HCFs) with inner diameters of 30 µm, 50 µm, and 75 µm are spliced coaxially with dual-hole fiber (DHF) or photonic cr…

Two-dimensional MXene Ti<sub>3</sub>C<sub>2</sub> for Efficient Photoacoustic Conversion Open

Kuangyu Zhou, Zhihua Shao, Xueguang Qiao · 2023

Two-dimensional MXene are potential photoacoustic conversion materials due to the excellent light absorption and photothermal conversion efficiencies. In this study, we theoretically analyze and experimentally demonstrate the photoacoustic…

Fiber Bragg Grating Sensor Combined with Silicone Compliantcylinder for Orientation Identification of Three-Component Geophone Open

Shuai Gao, Tao Yang, Ruohui Wang, Yizhuo Li, Zhiquan Gan , et al. · 2023

High Sensitivity Fbg Seismic Detector Based on Symmetrical Hinge Structure with Dual Mass Blocks Open

Huidong Li, Xuan Zhang, Hong Gao, Rui Zhou, Xueguang Qiao · 2023

Low Frequency Fiber Optic Accelerometer Based on Lever Amplification Structure Open

Huidong Li, Xuan Zhang, Rui Zhou, Xueguang Qiao · 2023

Light intensity optimization of optical fiber stress sensor based on SSA-LSTM model Open

Dakuan Yu, Xueguang Qiao, Xiangyu Wang · 2022

In order to further improve the measurement range and accuracy of optical fiber stress sensor based on the interference between rising vortex beam and plane wave beam, a new stress demodulation model is designed. This model proposes a meth…

Two-dimensional displacement (bending) sensor based on cascaded Fabry–Perot interferometers fabricated in a seven-core fiber Open

Aoao Yang, Weijia Bao, Fengyi Chen, Xingyong Li, Ruohui Wang , et al. · 2022

We demonstrated a two-dimensional vector displacement (bending) sensor with high angular resolution based on Vernier effect generated by two cascaded Fabry–Perot interferometers (FPI) in a seven-core fiber (SCF). To form the FPI, plane-sha…

Advanced suspended-core fiber sensor for seismic physical modeling Open

Zhihua Shao, Kuangyu Zhou, Huanhuan Yin, Xi Yang, Xueguang Qiao · 2022

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 corrosion and two cascaded uniform fiber Bragg gratings (FBGs) are…

High thermal stability of ultra-low insertion loss type II cladding fiber Bragg grating based on femtosecond laser point-by-point technology Open

Dan Su, Xueguang Qiao · 2022

The insertion loss (IL) of the type II fiber Bragg grating (FBG) induced by the femtosecond laser limits its multiplexing performance. Femtosecond laser point-by-point (PbP) technology is used to directly write type II fiber gratings in th…

Laser ultrasonic excitation using graphene heat dissipation film for ultrasonic detection of seismic physical model Open

Lang Xu, Zhihua Shao, Yichun Peng, Qiangzhou Rong, Xueguang Qiao · 2022

With excellent thermal conductivity and unique two-dimensional structure, the graphene heat dissipation film (GHDF) has been a potential photoacoustic (PA) material for multiple applications. In this study, we apply the GHDF into laser ult…

Development of Low Frequency and High Sensitivity Fiber Optic Accelerometer Based on Multi-Stage Flexure Hinges Open

Huidong Li, Hong Gao, Wei Fan, Rui Zhou, Xueguang Qiao · 2022

High-Sensitive and Temperature-Immune Curvature Sensor Based on Bitaper Sandwiching in Sms Fiber Structure Open

Min Shao, Zhongwei Cao, Hong Gao, Haiwei Fu, Xueguang Qiao · 2022

Low-Frequency Temperature Compensation Fiber Bragg Grating Accelerometer Based on Double-Arched Beam Open

Wei Fan, Rui Zhou, Huidong Li, Dakuan Yu, Xueguang Qiao · 2022

Low-Frequency Fiber Bragg Grating Accelerometer Based on Diaphragm-Type Cantilever Open

Wei Fan, Xueguang Qiao, Jin Wen, Hong Gao · 2022

Vector bending sensor based on an edge-core cladding-type fiber Bragg grating Open

Fengyi Chen, Xingyong Li, Weijia Bao, Ruohui Wang, Xueguang Qiao · 2021

A two-dimensional vector bending sensor that is both compact and simple is proposed and demonstrated, based on an edge-core cladding-type fiber Bragg grating (ECLFBG) inscribed in an edge-core. The ECLFBG is written parallel to the edge-co…

Orientation-dependent fiber-optic accelerometer based on eccentric fiber Bragg grating Open

Fengyi Chen, Ruohui Wang, Xingyong Li, Xueguang Qiao · 2021

A highly localized eccentric fiber Bragg grating (EFBG) accelerometer was proposed, and its orientation-dependent measurement results were demonstrated experimentally. An EFBG was inscribed point-by-point (PbP) in a single-mode fiber (SMF)…

An Optical Fiber Sensor for Oriented Bending Based on Eccentric UV Exposure Open

Dakuan Yu, Xueguang Qiao, Xiangyu Wang, Lisong Zhang · 2020

The optical fiber sensor for oriented bending based on eccentric UV exposure is fabricated. With the eccentric UV exposure on the ready-made Michelson interference fiber structure, the optical sensor gives the oriented bending characterist…

Highly Integrated All-Fiber FP/FBG Sensor for Accurate Measurement of Strain under High Temperature Open

Tingting Yang, Xiu He, Zengling Ran, Zhendong Xie, Yunjiang Rao , et al. · 2018

Accurate measurement of strain is one of the most important issues for high temperature environments. We present a highly integrated all-fiber sensor to achieve precise measurements of strain/high-pressure, which consists of a fiber Bragg …

Ultrasonic imaging of seismic physical models using a fringe visibility enhanced fiber-optic Fabry-Perot interferometric sensor Open

Wenlu Zhang, Fengyi Chen, Wenwen Ma, Qiangzhou Rong, Xueguang Qiao , et al. · 2018

A fringe visibility enhanced fiber-optic Fabry-Perot interferometer based ultrasonic sensor is proposed and experimentally demonstrated for seismic physical model imaging. The sensor consists of a graded index multimode fiber collimator an…

High-spatial-resolution ultrasonic sensor using a micro suspended-core fiber Open

Zhihua Shao, Qiangzhou Rong, Fengyi Chen, Xueguang Qiao · 2018

A high-resolution fiber-optic ultrasonic sensor based on a suspended-core fiber was designed and experimentally demonstrated. The intrinsic Fabry-Perot interferometer consisting of a micro suspended-core from acid corrosion of a grapefruit…

All-fiber 3D vector displacement (bending) sensor based on an eccentric FBG Open

Weijia Bao, Qiangzhou Rong, Fengyi Chen, Xueguang Qiao · 2018

We demonstrate a fiber-optic 3D vector displacement sensor based on the monitoring of Bragg reflection from an eccentric grating inscribed in a depressed-cladding fiber using the femtosecond laser side-illumination and phase-mask technique…

Fringe Visibility Enhanced Fiber-Optic Fabry-Perot Interferometric Sensor for Highly Sensitive Ultrasound Detection Open

Xueguang Qiao, Wenlu Zhang, Ruohui Wang, Qiangzhou Rong, Zhihua Shao , et al. · 2017

A fringe visibility enhanced fiber-optic Fabry-Perot functionalized diaphragm based ultrasonic sensor is proposed and experimentally demonstrated for ultrasound sensing. [...]

Highly sensitive fiber-optic accelerometer by grating inscription in specific core dip fiber Open

Qiangzhou Rong, Tuan Guo, Weijia Bao, Zhihua Shao, Gang‐Ding Peng , et al. · 2017

Higher-order micro-fiber modes for Escherichia coli manipulation using a tapered seven-core fiber Open

Qiangzhou Rong, Yixuan Zhou, Xunli Yin, Zhihua Shao, Xueguang Qiao · 2017

Optical manipulation using optical micro- and nano-fibers has shown potential for controlling bacterial activities such as E. coli trapping, propelling, and binding. Most of these manipulations have been performed using the propagation of …

Curvature and Temperature Measurement Based on a Few-Mode PCF Formed M-Z-I and an Embedded FBG Open

Hui Liu, Hangzhou Yang, Xueguang Qiao, Yong‐Qiang Wang, Xiaochong Liu , et al. · 2017

We have experimentally demonstrated an optical fiber Mach-Zehnder interferometer (MZI) structure formed by a few-mode photonic crystal fiber (PCF) for curvature measurement and inscribed a fiber Bragg grating (FBG) in the PCF for the purpo…

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