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Fiber-optic vibration sensor based on wavefront-splitting interferometry

机译：基于波前分离干涉法的光纤振动传感器

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In this paper, we present the working principle and the preliminary results of a novel vibration sensor based on wavefront-splitting interferometry. The interference signal is formed by superposing the radiations within a compact sensor space at which the wavefront is split and reflected by the sample surface. The performance of sensor is determined by the geometrical dimensions, the polarization of the incident light and the optical properties of the sample surface. Due to the grazing incidence of the detecting light, the interference signal is strong and obvious regardless of the material of the sample surface. Therefore, this fiber-optic sensor is more sensitive than the other displacement and vibration sensors, especially when applied for the optically low-reflective samples. The experiments using the OHP transparency and the metal structures demonstrate the static and dynamic measurements of the fiber-optic sensor.
机译：本文介绍了一种基于波前分离干涉技术的新型振动传感器的工作原理和初步结果。干扰信号是通过将辐射叠加在紧凑的传感器空间中而形成的，在该传感器空间中，波前被样品表面分开并反射。传感器的性能取决于几何尺寸，入射光的偏振和样品表面的光学特性。由于检测光的掠射入射，无论样品表面的材料如何，干涉信号都是很明显的。因此，这种光纤传感器比其他的位移和振动传感器更灵敏，尤其是当用于光学反射率低的样品时。使用OHP透明性和金属结构进行的实验演示了光纤传感器的静态和动态测量。

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