Results 21 to 30 of about 1,808,138 (293)

Galloping Vibration Monitoring of Overhead Transmission Lines by Chirped FBG Array

open access: yesPhotonic Sensors, 2022
A distributed online fiber sensing system based on the phase-sensitive optical time domain reflectometer (Φ-OTDR) enhanced by the drawing tower fiber Bragg grating (FBG) array is presented and investigated experimentally for monitoring the galloping of ...
Qizhong Yan   +5 more
doaj   +1 more source

Overview of Fibre Optic Sensing Technology in the Field of Physical Ocean Observation

open access: yesFrontiers in Physics, 2021
Fiber optic sensors are expected to be an auxiliary measurement tool in the field of ocean observation due to their small size, easy networking, intrinsic immunity to electromagnetic interference, and many other advantages.
Li Wang   +6 more
doaj   +1 more source

Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors [PDF]

open access: yes, 2006
Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase.
Flockhart, G M H   +2 more
core   +4 more sources

2D-Vector Magnetic Sensing Based on Ring-Shaped Fiber-Optic Structure Coated with Magnetic Fluid

open access: yesMicromachines, 2023
In this work, a novel fiber-optic sensor for 2D magnetic sensing is explored based on nanostructured magnetic fluid. The fiber-optic sensor comprises a ring-shaped fiber structure that is coated with magnetic fluid.
Qijing Lin   +4 more
doaj   +1 more source

STUDY OF GAIN FACTOR EFFECT OF ERBIUM DOPED FIBER AMPLIFIER ON NOISE FLOOR LEVEL OF FIBER-OPTIC INTERFEROMETRIC SENSOR [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2018
Subject of Research. The paper presents experimental study results of the gain factor effect of an erbium doped fiber amplifier on the noise floor level of a fiber-optic interferometric acoustic sensor.
M. V. Bykadorov   +3 more
doaj   +1 more source

Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors [PDF]

open access: yesSensors, 2015
This review summarizes principles and current stage of development of fiber-optic chemical sensors (FOCS) and biosensors (FOBS). Fiber optic sensor (FOS) systems use the ability of optical fibers (OF) to guide the light in the spectral range from ultraviolet (UV) (180 nm) up to middle infrared (IR) (10 μm) and modulation of guided light by the ...
Marie Pospísilová   +2 more
openaire   +4 more sources

Research Advances on Fiber-Optic SPR Sensors with Temperature Self-Compensation

open access: yesSensors, 2023
The fiber-optic surface plasmon resonance sensor has very promising applications in environmental monitoring, biochemical sensing, and medical diagnosis, due to the superiority of high sensitivity and novel label-free microstructure.
Hongxia Zhao   +4 more
doaj   +1 more source

Interferometric Fiber Optic Sensors [PDF]

open access: yesSensors, 2012
Fiber optic interferometers to sense various physical parameters including temperature, strain, pressure, and refractive index have been widely investigated. They can be categorized into four types: Fabry-Perot, Mach-Zehnder, Michelson, and Sagnac.
Byeong Ha Lee   +6 more
openaire   +4 more sources

Desain Sensor Tingkat Kekeruhan Air Menggunakan Bahan Fiber Optik

open access: yesJurnal Jaringan Telekomunikasi, 2021
Pentingnya mengetahui tingkat kekeruhan air terutama dalam aktivitas penggunaan air konsumsi yang berupa air bersih menuntut adanya suatu alat yang digunakan untuk mengukur tingkat kekeruhan air. Pemanfaatan serat optik untuk mengetahui tingkat kekeruhan
Silviana Dewi Masitoh   +2 more
doaj   +1 more source

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

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