scholarly journals Study of the Sensing Characteristics of Irradiated Fiber Bragg Gratings and Fabry-Perot Interferometers Under Gamma Radiation

2021 ◽  
Author(s):  
Zhuoyue Li ◽  
Zengling Ran ◽  
Xianguo Qing ◽  
Zhengxi He ◽  
Yaqin Xiao ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Temperature Sensitivity ◽  
Pressure Sensors ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Nuclear Radiation ◽  
Pressure Sensitivity ◽  
Fabry Perot ◽  
Fbg Sensors ◽  
Sensing Characteristics

AbstractThe sensing characteristics of irradiated fiber Bragg gratings (FBGs) and Fabry-Perot interferometers (FPIs) were investigated under a 2 MGy dose of gamma radiation. The study found that the pressure sensitivity of FP sensors after irradiation was stable, while the temperature sensitivity of FBG sensors was unstable, and both wavelengths displayed a shift. These findings offer the possibility for the application of FP pressure sensors in the gamma radiation environments, and FBG sensors require further research to be suitable for application in the nuclear radiation environments.

Study of the Second Order Sensitivity of the Fiber Bragg Gratings

2011 ◽  
Vol 63-64 ◽  
pp. 732-735
Author(s):  
Gui Hua Zhang
Keyword(s):  
Temperature Change ◽  
Temperature Sensitivity ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Second Order ◽  
Strain Sensitivity ◽  
Mathematical Formulas

According to the Bragging equation, the general mathematical formulas of the temperature change error and the strain error are got under the consideration of the second-order temperature sensitivity and the second-order strain sensitivity. The two error curves are given in the conditions of T = 20°C and e = 1000me.

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