Results 81 to 90 of about 20,217 (260)

Two-axis bend measurement with Bragg gratings in multicore optical fiber [PDF]

, 2003
We describe what is to our knowledge the first use of fiber Bragg gratings written into three separate cores of a multicore fiber for two-axis curvature measurement.
Araujo, Blanchard, Djordjevich, G. M. H. Flockhart, Gander, Gander, I. Bennion, J. D. C. Jones, J. S. Barton, Jones, L. Zhang, Liu, Patrick, Rao, Rosinski, W. N. MacPherson, Xu   +16 more
core   +2 more sources

Dynamic Responses Measured by Optical Fiber Sensor for Structural Health Monitoring

Applied Sciences, 2019
An optical fiber sensing system integrating a fiber Bragg grating (FBG) sensor, a long-period fiber grating (LPFG) optical filter and a photodetector is presented to monitor the dynamic response of a structure subjected to base excitation and impact ...
Shiuh-Chuan Her, Shin-Chieh Chung
doaj   +1 more source

Design Reliable Bus Structure Distributed Fiber Bragg Grating Sensor Network Using Gated Recurrent Unit Network

Sensors, 2020
The focus of this paper was designing and demonstrating bus structure FBG sensor networks using intensity wavelength division multiplexing (IWDM) techniques and a gated recurrent unit (GRU) algorithm to increase the capability of multiplexing and the ...
Amare Mulatie Dehnaw, Yibeltal Chanie Manie, Ya Yu Chen, Po Han Chiu, Hung Wei Huang, Guan Wei Chen, Peng Chun Peng   +6 more
doaj   +1 more source

A novel application of Fiber Bragg Grating (FBG) sensors in MPGD

, 2015
We present a novel application of Fiber Bragg Grating (FBG) sensors in the construction and characterisation of Micro Pattern Gaseous Detector (MPGD), with particular attention to the realisation of the largest triple (Gas electron Multiplier) GEM ...
Abbaneo, D., Abbas, M., Abbrescia, M., Abdelalim, A. A., Aboamer, O., Acosta, D., Ahmad, A., Ahmed, W., Ahmed, W., Akl, M. Abi, Aleksandrov, A., Altieri, P., Aly, R., Asawatangtrakuldee, C., Aspell, P., Assran, Y., Awan, I., Bally, S., Ban, Y., Banerjee, S., Baranac, A. Puig, Barashko, V., Barria, P., Bencze, G., Beni, N., Benussi, L., Bhopatkar, V., Bianco, S., Bos, J., Bouhali, O., Braghieri, A., Braibant, S., Buontempo, S., Calabria, C., Caponero, M., Caputo, C., Cassese, F., Castaneda, A., Cauwenbergh, S., Cavallo, F. R., Celik, A., Choi, M., Choi, S., Christiansen, J., Cimmino, A., Colafranceschi, S., Colaleo, A., Czellar, S., Dabrowski, M. M., De Lentdecker, G., De Oliveira, R., de Robertis, G., Dildick, S., Dorney, B., Elmetenawee, W., Endroczi, G., Errico, F., Fenyvesi, A., Ferry, S., Furic, I., Garcia, A. Conde, Giacomelli, P., Golovtsov, V., Guiducci, L., Guilloux, F., Gutierrez, A., Hadjiiska, R. M., Hassan, A., Hauser, J., Hoepfner, K., Hohlmann, M., Hoorani, H., Iaydjiev, P., Jeng, Y. G., Kamon, T., Karchin, P., Kim, H., Korytov, A., Krutelyov, S., Kumar, A., Lee, J., Lenzi, T., Litov, L., Loddo, F., Madorsky, A., Maerschalk, T., Maggi, M., Magnani, A., Majumdar, N., Mal, P. K., Mandal, K., Marchioro, A., Marinov, A., Masod, R., Merlin, J. A., Mitselmakher, G., Mohanty, A. K., Mohapatra, A., Molnar, J., Muhammad, S., Mukhopadhyay, S., Naimuddin, M., Nuzzo, S., Oliveri, E., Pant, L. M., Paolucci, P., Park, I., Passamonti, L., Passeggio, G., Pavlov, B., Philipps, B., Piccolo, D., Pierluigi, D., Postema, H., Radi, A., Radogna, R., Raffone, G., Ranieri, A., Rashevski, G., Riccardi, C., Rodozov, M., Rodrigues, A., Ropelewski, L., RoyChowdhury, S., Russo, A., Ryu, G., Ryu, M. S., Safonov, A., Salva, S., Saviano, G., Shah, A. H., Sharma, A., Sharma, A., Sharma, R., Shopova, M., Sturdy, J., Sultanov, G., Swain, S. K., Szillasi, Z., Tatarinov, A., Tuuva, T., Tytgat, M., Vai, I., Van Stenis, M., Venditti, R., Verhagen, E., Verwilligen, P., Vitulo, P., Volkov, S., Vorobyev, A., Wang, D., Wang, M., Yang, U., Yang, Y., Yonamine, R., Zaganidis, N., Zenoni, F., Zhang, A.   +157 more
core   +3 more sources

Guided Wave and Damage Detection in Composite Laminates Using Different Fiber Optic Sensors

Sensors, 2009
Guided wave detection using different fiber optic sensors and their applications in damage detection for composite laminates were systematically investigated and compared in this paper.
Fucai Li, Hideaki Murayama, Kazuro Kageyama, Takehiro Shirai   +3 more
doaj   +1 more source

Optical FBG Sensors for Static Structural Health Monitoring

Procedia Engineering, 2011
AbstractIn this paper, the monitoring of an adobe structure with optical fiber sensors is reported. Static measurements were made during a destructive test on a full-scale wall, in which an in-plane cyclic force was imposed by a hydraulic jack until its collapse.
Antunes, P., Varum, H., André, P.
openaire   +3 more sources

Fibre bragg grating sensor system for temperature application [PDF]

, 2016
A practical pass-through type fibre Bragg grating (FBG) temperature sensor system have been designed and experimentally investigated. The performance of FBG was evaluated with the varying of focusing elements in harsh environments, under direct sunlight.
Ahmad Noorden, A. F., Daud, S.
core   +2 more sources

High Precision, Small Size and Flexible FBG Strain Sensor for Slope Model Monitoring

Sensors, 2019
In this paper, a soft fiber Bragg grating (FBG) strain sensor was constructed of a rubber strip, FBGs and steel plates, which exhibits the advantages of high precision and a small size.
Hongbin Xu, Xinyu Zheng, Weigang Zhao, Xu Sun, Feng Li, Yanliang Du, Bo Liu, Yang Gao   +7 more
doaj   +1 more source

Micro-structured femtosecond laser assisted FBG hydrogen sensor

Optics Express, 2015
We discuss hydrogen sensors based on fiber Bragg gratings (FBGs) micro-machined by femtosecond laser to form microgrooves and sputtered with Pd/Ag composite film. The atomic ratio of the two metals is controlled at Pd:Ag = 3:1. At room temperature, the hydrogen sensitivity of the sensor probe micro-machined by 75 mW laser power and sputtered with 520 ...
Joseph Muna, Karanja, Yutang, Dai, Xian, Zhou, Bin, Liu, Minghong, Yang   +4 more
openaire   +2 more sources

Fiber Bragg Grating Dynamic Calibration Based on Online Sequential Extreme Learning Machine

Sensors, 2020
The fiber Bragg grating (FBG) sensor calibration process is critical for optimizing performance. Real-time dynamic calibration is essential to improve the measured accuracy of the sensor.
Qiufeng Shang, Wenjie Qin
doaj   +1 more source