Results 21 to 30 of about 1,111 (187)

The Impact of Rayleigh Scattering in UWFBG Array-Based Φ-OTDR and Its Suppression Method

Sensors, 2023
Ultra-weak fiber Bragg grating (UWFBG) array-based phase-sensitive optical time-domain reflectometry (Φ-OTDR) utilizes the interference interaction between the reference light and the reflected light from the broadband gratings for sensing.
Feng Wang, Yong Yu, Rui Hong, Ruifeng Tian, Yixin Zhang, Xuping Zhang   +5 more
doaj   +1 more source

Airborne Distributed Position and Orientation System Transfer Alignment Method Based on Fiber Bragg Grating

Sensors, 2020
With the demand for high resolution remote sensing, load array technology has gradually become an effective measure to improve imaging resolution. However, the external flow and internal engine vibration disturbance may lead to the flexible deformation ...
Wen Ye, Bin Gu, Yun Wang
doaj   +1 more source

Encrypted optical fiber tag based on encoded fiber Bragg grating array

International Journal of Extreme Manufacturing, 2023
Optical fibers are typically used in telecommunications services for data transmission, where the use of fiber tags is essential to distinguish between the different transmission fibers or channels and thus ensure the working functionality of the ...
Zhihao Cai, Bozhe Li, Zhiyong Bai, Dejun Liu, Kaiming Yang, Bonan Liu, Cong Zhao, Mengqiang Zou, Jie Zhou, Shangben Jiang, Jingyi Huang, Li Liu, Xuming Zhang, Junle Qu, Yiping Wang, Changrui Liao   +15 more
doaj   +1 more source

Fiber Bragg Grating Sensors and Sensor Arrays [PDF]

Advances in Science and Technology, 2008
Fiber Bragg gratings have found widespread application in sensor systems, e. g. for temperature, strain or refractive index measurements. The concept of fiber Bragg gratings allows also in a simple way the realisation of arrays of such sensors. The development of such optical fiber sensor systems often requires special fibers and grating structures ...
openaire   +1 more source

Multi-sensory microwave photonic address measuring system for intestinal manometry

Физика волновых процессов и радиотехнические системы, 2019
Solutions for a multi-sensor catheter in high resolution manometry based on classical interrogation with wave separation of fiber optic sensors or their polyharmonic probing already exist.
A.F. Agliullin, V.V. Purtov, A.Zh. Sakhabutdinov, I.I. Nureev, A.A. Tyazhelova, L.M. Sarvarova, S.V. Vasiliev, I.U. Kurbiev, A.D. Proskuryakov, V.V. Kadushkin   +9 more
doaj   +1 more source

Highly Dense FBG Temperature Sensor Assisted with Deep Learning Algorithms

Sensors, 2021
In this paper, we demonstrate the application of deep neural networks (DNNs) for processing the reflectance spectrum from a fiberoptic temperature sensor composed of densely inscribed fiber bragg gratings (FBG).
Alexey Kokhanovskiy, Nikita Shabalov, Alexandr Dostovalov, Alexey Wolf   +3 more
doaj   +1 more source

Review of fiber Bragg grating interrogation techniques based on array waveguide gratings [PDF]

Acta Physica Sinica, 2022
The photonic integrated interrogation technology based on array waveguide grating is a hot but difficult research area in the silicon optical field. Compared with traditional interrogation methods, the photonic integration interrogation technology based on an array waveguide grating has obvious advantages in high-speed and high-precision demodulation ...
Ke Li, Ming-Li Dong, Pei Yuan, Li-Dan Lu, Guang-Kai Sun, Lian-Qing Zhu   +5 more
openaire   +1 more source

Study on the Design and Performance of a Glove Based on the FBG Array for Hand Posture Sensing

Sensors, 2023
This study introduces a new wearable fiber-optic sensor glove. The glove utilizes a flexible material, polydimethylsiloxane (PDMS), and a silicone tube to encapsulate fiber Bragg gratings (FBGs).
Hongcheng Rao, Binbin Luo, Decao Wu, Pan Yi, Fudan Chen, Shenghui Shi, Xue Zou, Yuliang Chen, Mingfu Zhao   +8 more
doaj   +1 more source

FPGA-Based Dynamic Wavelength Interrogation System for Thousands of Identical FBG Sensors

Photonics, 2022
Under realistic scenarios, more fiber Bragg gratings (FBGs) are always expected to be multiplexed in one sensor array to share the expensive optical components and electrical devices.
Jiaqi Wang, Xuelei Fu, Hui Gao, Xin Gui, Honghai Wang, Zhengying Li   +5 more
doaj   +1 more source

PLC-Based Arrayed Waveguide Grating Design for Fiber Bragg Grating Interrogation System

Nanomaterials, 2022
A fiber Bragg grating (FBG) interrogator is a scientific instrument that converts the wavelength change of FBG sensors into readable electrical signals. To achieve miniaturization and integration of FBG interrogator, we designed and fabricated a 36-channel array waveguide grating (AWG) on silica-based planar lightwave circuits (PLC) as a key device in ...
Li, Ke, Yuan, Pei, Lu, Lidan, Dong, Mingli, Zhu, Lianqing   +4 more
openaire   +3 more sources