Research of the Technology Based on Fiber Bragg Grating for Measurement of Temperature Rise of Electrical Appliances

2012 ◽  
Vol 571 ◽  
pp. 200-204
Author(s):  
Zhao Xi Wu ◽  
Yu Zhan Wei ◽  
Jian Cui ◽  
Shui Sheng Wang ◽  
Xiao Peng Dong
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Rise ◽  
Electromagnetic Interference ◽  
Measurement Method ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Experimental Results ◽  
New Method ◽  
Measuring System

A new method of using fiber Bragg gratings as the sensing elements in the measurement of temperature rises of electrical appliances is proposed in this paper. Comparing with the conventional measurement method with thermocouples, the new method can overcome problems such as electromagnetic interference, hazard of electrical leakage, etc. The characteristics and key components employed in the measuring system are analyzed and discussed. The experimental results show that the temperature rises of electrical appliances under test can be obtained quickly and accurately with the specifically designed sensors made by optical fiber Bragg gratings.

scholarly journals ANALYSIS OF METROLOGICAL PROPERTIES FIBER BRAGG GRATINGS WITH A CONSTANT AND VARIABLE PERIOD

2018 ◽  
Vol 8 (2) ◽  
pp. 62-67
Author(s):  
Tomasz Zieliński ◽  
Piotr Kisała
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Periodic Structures ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Bragg Grating ◽  
Variable Period ◽  
Accuracy Of Measurements

The paper presents periodic structures in terms of metrological properties in the distinction for a fiber Bragg grating (FBG) with a constant and changeable period. The process of their formation and characteristics as well as applications in many areas have been described. On the basis of the literature, the results of research and measurements of measurable quantities such as temperature and stress made by periodic structures applied to the fiber of the optical fiber are presented. Analysis of the presented measurements allowed to mark the ranges and accuracy of measurements of individual applications.

Optical fiber Bragg gratings Part II Modeling of finite-length gratings and grating arrays

2002 ◽  
Vol 19 (9) ◽  
pp. 1855 ◽  
Author(s):  
Vittorio M. N. Passaro ◽  
Roberto Diana ◽  
Mario N. Armenise
Keyword(s):  
Optical Fiber ◽  
Finite Length ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings

Characterization of Optical Fiber Bragg Gratings as Strain Sensors Considering Load Direction

2008 ◽  
Author(s):  
Michael C. Emmons ◽  
Sunny Karnani ◽  
K. P. Mohanchandra ◽  
Gregory P. Carman ◽  
Stefano Trono ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Strain Sensors ◽  
Great Promise ◽  
Fiber Direction ◽  
Load Direction ◽  
Isotropic Composite ◽  
Loading Direction

This study investigates the influence of lay-up and load direction on embedded optical fiber Bragg gratings (FBGs) used as strain sensors. FBGs have shown great promise for application to structural health monitoring with advantages of small size and cylindrical geometry readily allowing for embedment within fiber reinforced composites. Characterization of the embedded FBGs is necessary to develop a rugged and reliable strain sensor. This paper specifically explores the effects of loading direction on the FBG strain outputs. A well behaved baseline case is established with results for gratings loaded parallel to the optical fiber direction while embedded parallel to the adjacent structural fibers in a quasi-isotropic composite. Results and analysis are also presented for a case involving a composite fabricated with the optical and structural fibers parallel to each other but perpendicular to the loading direction. Extremely good results are obtained relating FBG strain measurements with that of surface mounted resistance strain gauges.

scholarly journals Multimode optical fiber Bragg gratings: modeling, simulation, and experiments

2004 ◽  
Author(s):  
Jinsong Zhang ◽  
Honggang Yu ◽  
Chang-Qing Xu ◽  
Wei-Ping Huang
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Multimode Optical Fiber ◽  
Modeling Simulation

Quantitative morphology of femtosecond laser-written point-by-point optical fiber Bragg gratings

2021 ◽  
Author(s):  
Saurabh Bhardwaj ◽  
Toney Fernandez ◽  
Simon Gross ◽  
Michael Withford ◽  
Michael Steel
Keyword(s):  
Femtosecond Laser ◽  
Optical Fiber ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Quantitative Morphology
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