Results 101 to 110 of about 1,333 (177)

Design of a flattening filter using Fiber Bragg Gratings for EDFA gain equalization: an artificial neural network application

open access: yesCiencia e Ingeniería Neogranadina, 2019
This paper presents a proposal for the non-uniform gain compensation of an Erbium-doped fiber optic amplifier (EDFA) in a Wavelength Division Multiplexed (WDM) system using Fiber Bragg Gratings (FBG).
David Esteban Montoya Alba   +2 more
doaj   +4 more sources

High-Density Distributed Crack Tip Sensing System Using Dense Ultra-Short FBG Sensors

open access: yesSensors, 2019
Crack generation starts at the crack tip, which bears the highest stress concentration. Under further stress, the crack propagates and leads to severe structural damage.
Xin Gui   +6 more
doaj   +1 more source

Performance characterisation of a new photo-microsensor based sensing head for displacement measurement [PDF]

open access: yes, 2016
This paper presents a robust displacement sensor with nanometre-scale resolution over a micrometre range. It is composed of low cost commercially available slotted photo-microsensors (SPMs).
Potdar, Akshay Anand   +2 more
core   +1 more source

Studio e sviluppo di un sistema di interrogazione di Fiber Bragg Grating Sensors implementato tramite Array Waveguide Gratings [PDF]

open access: yes, 2009
In questa tesi si affronta lo studio dettagliato di un interrogatore di Fiber Bragg Grating Sensors tramite Array Waveguide Gratings controllabili in temperatura. Dopo aver risolto le problematiche ottiche e creato un set-up funzionante, viene progettata,
TONIONI, GIANNI
core  

Subspace system identification framework for the analysis of multimoded propagation of THz-transient signals [PDF]

open access: yes, 1990
We provide a system identification framework for the analysis of THz-transient data. The subspace identification algorithm for both deterministic and stochastic systems is used to model the time-domain responses of structures under broadband excitation ...
O’Donnell, Kane   +484 more
core   +2 more sources

Analysis of fiber Bragg grating sensors in smart structures [PDF]

open access: yes, 1997
Optical fibers are used in smart structures mainly as sensor elements and communication links. Fiber Bragg grating (FBG) based sensors have become the most popular ones among all the fiber sensors.
Das, Indu S   +2 more
core  

A Hybrid GAN-Inception Deep Learning Approach for Enhanced Coordinate-Based Acoustic Emission Source Localization

open access: yesApplied Sciences
In this paper, we propose a novel approach to coordinate-based acoustic emission (AE) source localization to address the challenges of limited and imbalanced datasets from fiber-optic AE sensors used for structural health monitoring (SHM).
Xuhui Huang, Ming Han, Yiming Deng
doaj   +1 more source

Research on fault monitoring of belt conveyor based on FBG sensor

open access: yesMeitan kexue jishu
The fault monitoring of belt conveyors serves as a pivotal tool in preventing safety incidents, enhancing production efficiency, and facilitating the intelligent operation of equipment.
Xinqiu FANG   +7 more
doaj   +1 more source

One-wavelength fiber Bragg grating array interrogation by reflectivity division multiplexing [PDF]

open access: yes, 2008
We present a novel fiber Bragg grating array interrogation system wherein all the sensors have the same Bragg wavelength but different reflectivities. The sensor grating signals are tracked using a multiple-threshold level-crossing network consisting of ...
Madhav, KV   +3 more
core  

Fiber Bragg gratings for temperature monitoring in methanol and methane steam reformers [PDF]

open access: yes, 2017
Steam reforming of methanol and hydrocarbon are currently the processes of choice to produce hydrogen. Due to the endothermic nature of these reactions, zones of low temperature are commonly found in reformers.
Trudel, Elizabeth
core  

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