scholarly journals Fiber Bragg Grating Technology for New Generation Optical Access Systems

10.5772/52911 ◽  
2013 ◽  
Author(s):  
Oskars Ozolins
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Optical Access ◽  
New Generation

Application of Special Optical Fiber Sensing Technology in New Generation of Smart Substation

2014 ◽  
Vol 986-987 ◽  
pp. 1191-1195
Author(s):  
Rui Rui Yang ◽  
Hui Yuan Yang ◽  
Wei Chi Ou
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Current Transformer ◽  
Bragg Grating ◽  
Distributed Temperature Sensing ◽  
Fiber Sensing ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
New Generation ◽  
Smart Substation

The new generation of smart substation puts forward higher requirements to sensing technology. Based on the needs of these requirements, four kinds of special optical fiber sensing technology in power systems were researched: all-optical current transformer, distributed temperature sensing technology, fiber grating vibration sensing technology and fiber Bragg grating sensing technology. These kinds of optical fiber sensing technology for the new generation of smart substation to enhance its performance were analyzed. Finally, based on the fiber Bragg grating sensing technology, the online oil and winding temperature monitoring system was constructed for the new generation of smart substation.

scholarly journals Fiber Bragg grating sensor as valuable technological platform for new generation of superconducting magnets

2014 ◽  
Author(s):  
A. Chiuchiolo ◽  
M. Bajko ◽  
J. C. Perez ◽  
H. Bajas ◽  
P. Viret ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Superconducting Magnets ◽  
Fiber Bragg Grating Sensor ◽  
Bragg Grating ◽  
Technological Platform ◽  
New Generation ◽  
Bragg Grating Sensor

Basic Designs of New Generation Optical Access Based on WDM-direct for ADS, PON and SS Topologies

2008 ◽  
Author(s):  
Takaya Miyazawa ◽  
Hiroaki Harai
Keyword(s):  
Optical Access ◽  
New Generation

scholarly journals Experimental Strain Measurement Approach Using Fiber Bragg Grating Sensors for Monitoring of Railway Switches and Crossings

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3639
Author(s):  
Abdelfateh Kerrouche ◽  
Taoufik Najeh ◽  
Pablo Jaen-Sola
Keyword(s):  
Fiber Bragg Grating ◽  
Experimental Tests ◽  
Cost Effective ◽  
Measuring Method ◽  
Bragg Grating ◽  
Railway Network ◽  
System Failures ◽  
Railway Infrastructure ◽  
Train Speed ◽  
And Control

Railway infrastructure plays a major role in providing the most cost-effective way to transport freight and passengers. The increase in train speed, traffic growth, heavier axles, and harsh environments make railway assets susceptible to degradation and failure. Railway switches and crossings (S&C) are a key element in any railway network, providing flexible traffic for trains to switch between tracks (through or turnout direction). S&C systems have complex structures, with many components, such as crossing parts, frogs, switchblades, and point machines. Many technologies (e.g., electrical, mechanical, and electronic devices) are used to operate and control S&C. These S&C systems are subject to failures and malfunctions that can cause delays, traffic disruptions, and even deadly accidents. Suitable field-based monitoring techniques to deal with fault detection in railway S&C systems are sought after. Wear is the major cause of S&C system failures. A novel measuring method to monitor excessive wear on the frog, as part of S&C, based on fiber Bragg grating (FBG) optical fiber sensors, is discussed in this paper. The developed solution is based on FBG sensors measuring the strain profile of the frog of S&C to determine wear size. A numerical model of a 3D prototype was developed through the finite element method, to define loading testing conditions, as well as for comparison with experimental tests. The sensors were examined under periodic and controlled loading tests. Results of this pilot study, based on simulation and laboratory tests, have shown a correlation for the static load. It was shown that the results of the experimental and the numerical studies were in good agreement.

A Fiber Bragg Grating acceleration sensor with temperature compensation

Optik ◽  
2021 ◽  
pp. 166993
Author(s):  
Xianfeng Zhao ◽  
Zhen’an Jia ◽  
Wei Fan ◽  
Wangfei Liu ◽  
Hong Gao ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Temperature Compensation ◽  
Bragg Grating ◽  
Acceleration Sensor

An unsupervised clustering-based sectionalized displacement reconstruction method for smart geogrids integrated with fiber Bragg grating sensors

2021 ◽  
Vol 286 ◽  
pp. 122924
Author(s):  
Zheng-fang Wang ◽  
Wen-qiang Kang ◽  
Jing Wang ◽  
Chang-bin Tian ◽  
Qin-mei Sui ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Unsupervised Clustering ◽  
Bragg Grating ◽  
Reconstruction Method ◽  
Fiber Bragg Grating Sensors ◽  
Displacement Reconstruction
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