基于不同包层直径保偏光纤的扭转传感器

IF 3.5 3区工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nami Jishu yu Jingmi Gongcheng/Nanotechnology and Precision Engineering Pub Date : 2021-01-25 DOI:10.1063/10.0003338

Xiaoqi Liu, Yan-ge Liu, Zhi Wang

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引用次数: 1

摘要

提出了一种采用锥形保偏光纤的Sagnac干涉仪的光纤捻度传感器。对传感器的传输特性进行了理论和实验研究。考虑到光纤几何形状的光弹性效应，可以通过施加不同的扭转角来控制PMF的模态和群双折射。比较了原始PMFs、微锥形PMFs和蚀刻PMFs的光谱波长位移、自由光谱范围和传输损耗。值得注意的是，蚀刻PMF的干涉倾角在相反的方向上移动。因此，所提出的基于pmf的传感器可以具有多参数传感应用。

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A twist sensor based on polarization-maintaining fibers with different cladding diameters

A fiber twist sensor using a Sagnac interferometer incorporating a tapered polarization-maintaining fiber (PMF) is proposed. The transmission properties of the sensor are investigated both theoretically and experimentally. Given the optoelastic effect, which depends on fiber geometry, the modal and group birefringences of the PMF can be controlled by applying different twist angles. The spectral wavelength shifts, free spectral ranges, and transmission losses of the original, microtapered, and etched PMFs were compared. Notably, the interference dips for the etched PMF move in opposite directions. As a result, the proposed PMF-based sensor could have multiparameter sensing applications.

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