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针对复合材料结构试件内部参量的测量提出了一种新型埋入式光纤传感器的研究方案。这种方案是采用双光敏管结构来检测干涉条纹的变化，运用适当的处理电路来计数条纹的移动量，并判断条纹的移动方向，从而测出复合材料构件内部物理参量的变化。对这种干涉型埋入式光纤传感器用于复合材料试件内部应变测量进行了理论推导，导出了条纹的移动量与应变的关系，并把这种传感器埋入环氧树脂复合材料梁中，对其应变进行了测量，给出了实验装置和实验结果，讨论了误差来源。
Aiming at the measurement of internal parameters of composite structural specimens, a new type of embedded optical fiber sensor research program is proposed. In this solution, the double photosensitive tube structure is used to detect the variation of the interference fringes. The appropriate processing circuit is used to count the fringe movement and to determine the movement direction of the fringes to detect the change of the internal physical parameters of the composite material. The theoretical derivation of this kind of interference type buried optical fiber sensor for the internal strain measurement of the composite material specimen is deduced. The relationship between the displacement of the stripe and the strain is deduced and buried in the epoxy composite material beam, The strain was measured, the experimental setup and experimental results were given, and the sources of error were discussed.