High γ-ray dose radiation effects on the performances of Brillouin scattering based optical fiber sensors
High γ-ray dose radiation effects on the performances of Brillouin scattering based optical fiber sensors
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DOI：
10.1364/oe.20.026978
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发表时间：
2012-11-19
期刊：
影响因子：
3.8
通讯作者：
Ouerdane, Youcef
中科院分区：
文献类型：
--
作者：
Pheron, Xavier;Girard, Sylvain;Ouerdane, Youcef
在基于布里渊散射的光纤传感器中使用分布的应变和温度来监测核废料储存库，需要研究它们在辐照下的性能变化。为此，我们在高伽马剂量下照射了各种类型的纤维，这代表了与所考虑的应用相关的恶劣环境限制。辐射对布里渊散射有两种影响：1)辐射诱导衰减(RIA)现象使光纤的线性透过率降低，影响距离；2)改变布里渊散射特性，改变布里渊损耗的固有频率位置及其对应变和温度的依赖关系。然后，我们研究了这些辐射诱导的变化在1到10 mGy剂量范围内的剂量依赖性，表明这些反应强烈地依赖于纤维成分。我们表征了辐射对应变和温度系数的影响，以及布里渊频率的依赖关系，为这些本征性质对辐射的强大稳健性提供了证据。从我们的结果来看，掺氟光纤在高伽马射线剂量辐射环境中通过布里渊传感器进行温度和应变传感似乎是非常有前途的候选材料。(C)2012年美国光学学会
The use of distributed strain and temperature in optical fiber sensors based on Brillouin scattering for the monitoring of nuclear waste repository requires investigation of their performance changes under irradiation. For this purpose, we irradiated various fiber types at high gamma doses which represented the harsh environment constraints associated with the considered application. Radiation leads to two phenomena impacting the Brillouin scattering: 1) decreasing in the fiber linear transmission through the radiation-induced attenuation (RIA) phenomenon which impacts distance range and 2) modifying the Brillouin scattering properties, both intrinsic frequency position of Brillouin loss and its dependence on strain and temperature. We then examined the dose dependence of these radiation-induced changes in the 1 to 10 MGy dose range, showing that the responses strongly depend on the fiber composition. We characterized the radiation effects on strain and temperature coefficients, dependencies of the Brillouin frequency, providing evidence for a strong robustness of these intrinsic properties against radiations. From our results, Fluorine-doped fibers appear to be very promising candidates for temperature and strain sensing through Brillouin-based sensors in high gamma-ray dose radiative environments. (C) 2012 Optical Society of America