A real-time inclinometer based on an etched fiber Bragg grating connected to hollow-core fiber

2014 ◽  
Author(s):  
Qiang Zhang ◽  
Tao Zhu ◽  
Fengyang Yin ◽  
Kin Seng Chiang ◽  
Ming Deng
Keyword(s):  
Fiber Bragg Grating ◽  
Real Time ◽  
Bragg Grating ◽  
Hollow Core ◽  
Core Fiber

Simultaneous Measurement Sensors of Temperature and Strain Based on Hollow Core Fiber and Fiber Bragg Grating

2018 ◽  
Vol 38 (12) ◽  
pp. 1206007
Author(s):  
谭展 Tan Zhan ◽  
廖常锐 Liao Changrui ◽  
刘申 Liu Shen ◽  
侯茂祥 Hou Maoxiang ◽  
张哲 Zhang Zhe ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Simultaneous Measurement ◽  
Bragg Grating ◽  
Hollow Core ◽  
Core Fiber

scholarly journals Tuneable Photonic Fiber Bragg Grating for Magnetic Field Sensor

2016 ◽  
Author(s):  
Farah S. Al-Thahapy ◽  
Anwaar A. Al-Dergazly
Keyword(s):  
Magnetic Field ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Hollow Core ◽  
Adhesive Material ◽  
Interferometric Technique ◽  
Translation Stage ◽  
Optical Adhesive ◽  
Field Sensor ◽  
Core Fiber

In this project, four of fibers Bragg gratings were fabricated by injecting different volumes of liquids (star line Glass Mechanix optical adhesive material, olive oil diluted with ethanol) into the hollow core fiber. The amplitude splitting interferometric technique with a high resolution specially designed translation stage was used for the fabrication process. The fabrication was done using ultraviolet laser operated at wavelength 405nm. The fabricated Bragg length of the four fibers is equal to 3.8 cm. The results presented fiber Bragg grating (FBG) with successful fabrication at 653.3 nm Bragg reflected wavelength.

scholarly journals Observation of symmetrical reflection sidebands in a silica suspended-core fiber Bragg grating

2010 ◽  
Vol 18 (16) ◽  
pp. 17373 ◽  
Author(s):  
M. L. V. Tse ◽  
K. M. Chung ◽  
L. Dong ◽  
B. K. Thomas ◽  
L. B. Fu ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Core Fiber

scholarly journals Real-Time Train Wheel Condition Monitoring by Fiber Bragg Grating Sensors

2011 ◽  
Vol 8 (1) ◽  
pp. 409048 ◽  
Author(s):  
Chuliang Wei ◽  
Qin Xin ◽  
W. H. Chung ◽  
Shun-yee Liu ◽  
Hwa-yaw Tam ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Real Time ◽  
Visual Inspection ◽  
Condition Index ◽  
Bragg Grating ◽  
Time System ◽  
Real Time System ◽  
Fiber Bragg Grating Sensors ◽  
Extensive Field ◽  
The Cost

Wheel defects on trains, such as flat wheels and out-of-roundness, inevitably jeopardize the safety of railway operations. Regular visual inspection and checking by experienced workers are the commonly adopted practice to identify wheel defects. However, the defects may not be spotted in time. Therefore, an automatic, remote-sensing, reliable, and accurate monitoring system for wheel condition is always desirable. The paper describes a real-time system to monitor wheel defects based on fiber Bragg grating sensors. Track strain response upon wheel-rail interaction is measured and processed to generate a condition index which directly reflects the wheel condition. This approach is verified by extensive field test, and the preliminary results show that this electromagnetic-immune system provides an effective alternative for wheel defects detection. The system significantly increases the efficiency of maintenance management and reduces the cost for defects detection, and more importantly, avoids derailment timely.

Bare fiber Bragg grating immunosensor for real-time detection ofEscherichia colibacteria

2016 ◽  
Vol 10 (2) ◽  
pp. 224-230 ◽  
Author(s):  
Rajesh Srinivasan ◽  
Sharath Umesh ◽  
Swetha Murali ◽  
Sundarrajan Asokan ◽  
Sai Siva Gorthi
Keyword(s):  
Fiber Bragg Grating ◽  
Real Time ◽  
Bragg Grating ◽  
Real Time Detection
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