IEICE Electronics Express
Online ISSN : 1349-2543
LETTER
Influence of the incident angle of strain wave on the sensing sensitivity of fiber Bragg grating
Xiao HuangYuegang TanLi CaiPing Xia
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2018 Volume 15 Issue 3 Pages 20171255

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Abstract

In recent years, fiber Bragg grating (FBG) strain sensors have been widely applied to measure strain and relative physical quantities. However, the direction of strain must be along the axial or transverse direction of FBG for many FBG sensors, significantly limiting application. Here, the sensing characteristics of FBG for different incident strain waves were determined, and the influences of the incident angle of static strain, low frequency strain, and high frequency strain on FBG sensitivity were characterized. The construction of an FBG strain sensor that can measure strain with any incident angle is proposed, and additional applications of sensing characteristics are discussed.

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© 2018 by The Institute of Electronics, Information and Communication Engineers
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