The 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.

中文翻译：

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伽马辐射下辐照光纤布拉格光栅和法布里-珀罗干涉仪的传感特性研究

在 2 MGy 剂量的伽马辐射下研究了辐照光纤布拉格光栅 (FBG) 和法布里-珀罗干涉仪 (FPI) 的传感特性。研究发现，辐照后FP传感器的压力灵敏度稳定，而FBG传感器的温度灵敏度不稳定，且两种波长均出现偏移。这些发现为 FP 压力传感器在伽马辐射环境中的应用提供了可能性，而 FBG 传感器需要进一步研究才能适用于核辐射环境。