概括
这项研究描述了倾斜纤维布拉格格 (TFBGs) 的温度灵敏度,发现单个测量因子准确地描述了共振转移. 为TFBG光谱开发了一个预测模型,通过补偿温度效应来提高传感精度.
科学领域:
- 光纤传感传感器是指光纤传感器.
- 光子学和纳米技术的使用.
- 材料科学 材料科学 材料科学
背景情况:
- 纤维布拉格格 (FBGs) 中核心模式共振的温度依赖性是众所周知的.
- 像倾斜FBG (TFBG) 这样的多共振网格中的覆盖模式共振缺乏彻底的温度特征.
- 准确的温度补偿对于TFBG传感应用至关重要.
研究的目的:
- 为了评估SMF-28纤维中紫外线写的TFBG的温度灵敏度.
- 建立TFBG温度响应的通用测量系数.
- 在不同温度下开发TFBG光谱的预测模拟模型.
主要方法:
- 对TFBG共振的实验性表征在10°-50°C温度范围内发生变化.
- 确定温度灵敏性的单个测量因子 (K_T).
- 使用核心指数,分散和热光系数 (dn/dT) 的模拟模型的开发和校准.
主要成果:
- 一个单个测量因子K_T = 6.25×10−6 ± 0.02×10−6 °C−1准确地描述了TFBG共振温度响应.
- 一个模拟模型在10°-50°C范围内高精度 (1-3 pm平均误差) 预测TFBG光谱.
- 通过结合dN/dT的线性温度依赖,模型的准确性提高到<1分钟.
结论:
- 该研究展示了一种简化的方法来表征TFBG温度敏感性.
- 开发的模型能够准确地补偿TFBG传感器中温度引起的波长变化.
- 使用共振组的缩放平均值可以提高TFBG传感应用中的测量精度.
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