A NEW METHOD FOR CLASSIFICATION AND IDENTIFICATION OF COMPLEX FIBER BRAGG GRATING USING THE GENETIC ALGORITHM

2007 ◽  
Vol 75 ◽  
pp. 329-356 ◽  
Author(s):  
Ali Rostami ◽  
Arash Yazdanpanah-Goharriz
Keyword(s):  
Genetic Algorithm ◽  
Fiber Bragg Grating ◽  
New Method ◽  
Bragg Grating

A new method for fiber Bragg grating wavelength demodulation with calibration

2006 ◽  
Author(s):  
Jian-wei Fu ◽  
Li-zhi Xiao ◽  
Yuan-zhong Zhang ◽  
Xiao-liang Zhao ◽  
Hai-feng Chen
Keyword(s):  
Fiber Bragg Grating ◽  
New Method ◽  
Bragg Grating

scholarly journals New Method of Temperature and Strain Decoupling Based on Directivity of Fiber Bragg Grating Sensing

2021 ◽  
Vol 2101 (1) ◽  
pp. 012023
Author(s):  
Xiao Huang ◽  
Zhenkun Jin ◽  
Qing Shen
Keyword(s):  
Fiber Bragg Grating ◽  
Cantilever Beam ◽  
Experimental Analysis ◽  
Strain Measurement ◽  
The Other ◽  
New Method ◽  
Bragg Grating ◽  
Center Wavelength ◽  
Influence Of Temperature ◽  
Sensing Characteristics

Abstract Fiber Bragg Grating (FBG) has been widely used in temperature and strain measurement. Its center wavelength drift is affected by both temperature and strain. The influence of temperature and strain on center wavelength should be decoupled when measuring. In this paper, the sensing characteristics of FBG which pasted at different angles were simulated and analyzed, and it was found that FBG sensing for strain has strong directivity. A dual FBG composite construction based on the directivity of FBG sensing was proposed. Two FBGs were at an Angle of 62°. One FBG was sensitive to both temperature and strain, and the other was only sensitive to temperature. The structure can realize the decoupling of temperature and strain, and it doesn’t depend on feature of cantilever beam. It was verified by experimental analysis that the decoupling result was good by utilizing the combined FBG structure, and decoupling was realized easily.

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