Abstract Distributed polarization coupling detection can be used for force sensing of polarization-maintaining fiber (PMF). In this paper, finite element analysis (FEA) is adopted to simulate the distributed polarization coupling force sensing of PMF. The initial thermal stress birefringence produced by the drawing process of PMF is simulated. In addition, the polarization coupling strength of PMF under transverse forces is analyzed. Also, the position of the dynamic force coupling point in a distributed white light interference (WLI) system is demodulated. The experimental results from a WLI system are in agreement with the FEA results. FEA is an effective numerical analysis method which can be used in the entire process of PMF production, force analysis, and sensing demodulation.

中文翻译：

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基于有限元方法的保偏光纤分布式偏振耦合力传感

摘要 分布式偏振耦合检测可用于保偏光纤（PMF）的力传感。本文采用有限元分析(FEA)来模拟PMF的分布式极化耦合力传感。模拟了PMF拉伸过程产生的初始热应力双折射。此外，还分析了横向力作用下PMF的极化耦合强度。此外，还解调了分布式白光干涉 (WLI) 系统中动态力耦合点的位置。WLI 系统的实验结果与 FEA 结果一致。FEA 是一种有效的数值分析方法，可用于 PMF 产生、力分析和传感解调的整个过程。