Results 11 to 20 of about 209,924 (304)

Microbend fiber-optic sensor [PDF]

open access: yesApplied Optics, 1984
Intensity modulation induced by microbending in multimode fibers is considered as a transduction mechanism for detecting environmental changes such as pressure, temperature, acceleration, and magnetic and electric fields. A generic microbend sensor has been defined and studied, and its components, such as sensing fiber, light source, optical fiber ...
N, Lagakos, J H, Cole, J A, Bucaro
openaire   +2 more sources

Fiber Optic Calorimetry [PDF]

open access: yes, 1997
A twin-bridge calorimeter using optical fiber as the sensor element was constructed and tested. This system demonstrates the principle and capability of using optical fibers for heat-flow measurements of special nuclear material. This calorimeter uses piezoelectric-generated phase-carrier modulation with subsequent electronic signal processes to allow ...
Rudy, C.   +4 more
openaire   +4 more sources

Versatile Vibration Sensing Using a Tapered Photonic Crystal Fiber With a Featured Core

open access: yesIEEE Photonics Journal, 2020
On the basis of intensity modulation, a vibration sensor using a tapered photonic crystal fiber (PCF) is demonstrated. The fiber is a solid-core PCF with a central air hole embedded in the core region.
Haihu Yu   +4 more
doaj   +1 more source

A High-Sensitivity Dual-Axis Accelerometer with Two FP Cavities Assembled on Single Optical Fiber

open access: yesSensors, 2022
In this paper, a dual-axis Fabry–Pérot (FP) accelerometer assembled on single optical fiber is proposed. The sensor is equipped with a special beam-splitting prism to split the light into two perpendicular directions (the X- and Y-axes); the prism ...
Bolun Zheng   +5 more
doaj   +1 more source

Opto-Mechatronics System for Train-Track Micro Deformation Sensing

open access: yesSensors, 2021
In this paper, we proposed and experimentally demonstrated an opto-mechatronics system to detect the micro-deformation of tracks caused by running trains.
Weibing Gan   +5 more
doaj   +1 more source

Drawing Tower In-Line Fabrication and the Spectrum Analysis of Sampled Fiber Grating

open access: yesPhotonic Sensors, 2019
Sampled fiber grating is a special superstructure fiber Bragg grating with a wide range of applications in many fields. In this work, based on drawing tower in-line fabrication system, a new preparation method of the sampled fiber grating is proposed and
Yu Zheng   +5 more
doaj   +1 more source

Difunctional Hydrogel Optical Fiber Fluorescence Sensor for Continuous and Simultaneous Monitoring of Glucose and pH

open access: yesBiosensors, 2023
It is significant for people with diabetes to know their body’s real-time glucose level, which can guide the diagnosis and treatment. Therefore, it is necessary to research continuous glucose monitoring (CGM) as it gives us real-time information about ...
Yangjie Li   +5 more
doaj   +1 more source

Multiple-Octave-Spanning Vibration Sensing Based on Simultaneous Vector Demodulation of 499 Fizeau Interference Signals from Identical Ultra-Weak Fiber Bragg Gratings Over 2.5 km

open access: yesSensors, 2018
Multi-point vibration sensing at the low frequency range of 0.5–100 Hz is of vital importance for applications such as seismic monitoring and underwater acoustic imaging.
Yi Li   +7 more
doaj   +1 more source

Research on multi-component gas optical detection system based on conjugated interferometer

open access: yesPhotonic Sensors, 2017
An optical multi-component gas detection system based on the conjugated interferometer (CI) is proposed and experimentally demonstrated. It can realize the concentration detection of mixture gas in the environment.
Xin Gui   +4 more
doaj   +1 more source

Design and Measurement of a Dual FBG High-Precision Shape Sensor for Wing Shape Reconstruction

open access: yesSensors, 2021
FBG shape sensors based on soft substrates are currently one of the research focuses of wing shape reconstruction, where soft substrates and torque are two important factors affecting the performance of shape sensors, but the related analysis is not ...
Huifeng Wu   +5 more
doaj   +1 more source

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