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基于四芯光纤的扭转/旋转、应变和温度测量微型法布里-珀罗传感器。

A Miniature Fabry Perot Sensor for Twist/Rotation, Strain and Temperature Measurements Based on a Four-Core Fiber.

机构信息

Laboratory for Electro-Optic Sensor Systems, UM FERI, Koroška cesta 46, 2000 Maribor, Slovenia.

出版信息

Sensors (Basel). 2019 Apr 1;19(7):1574. doi: 10.3390/s19071574.

DOI:10.3390/s19071574
PMID:30939802
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6479749/
Abstract

In this article, a novel miniature Fabry-Perot twist/rotation sensor using a four core fiber and quadruple interferometer setup is presented and demonstrated. Detailed sensor modeling, analytical evaluation and test measurement assessment were conducted in this contribution. The sensor structure comprises a single lead-in multicore fiber, which has four eccentrically positioned cores, a special asymmetrical microstructure, and an inline semi-reflective mirror, all packed in a glass capillary housing. A four core fiber positioned in front of a special asymmetrical microstructure and the inline semi reflective mirror defines four Fabry-Perot interferometers. Rotation of the sensors' asymmetrical microstructure around the axis of the in-line four core fibers´ modulates the path lengths of all four interferometers simultaneously. Proper processing of path length changes of all four interferometers allows for unambiguous and temperature independent determination of the sensor's rotation angle.

摘要

本文提出并演示了一种新颖的微型法布里-珀罗扭转/旋转传感器，使用四芯光纤和四重干涉仪结构。本研究进行了详细的传感器建模、分析评估和测试测量评估。传感器结构包括单根引入多芯光纤，该光纤具有四个偏心定位的纤芯、特殊的非对称微结构和在线半反射镜，均封装在玻璃毛细管外壳中。位于特殊非对称微结构和在线半反射镜前面的四芯光纤定义了四个法布里-珀罗干涉仪。传感器非对称微结构围绕在线四芯光纤轴的旋转同时调制所有四个干涉仪的光程长度。对所有四个干涉仪的光程长度变化进行适当处理，可以实现传感器旋转角度的无歧义且温度独立的确定。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/9f6d6fa12cb1/sensors-19-01574-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/60368cee6c09/sensors-19-01574-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/fb2b16b0fadc/sensors-19-01574-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/96dce6fedca2/sensors-19-01574-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/a402ba31231c/sensors-19-01574-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/c5f59879abe4/sensors-19-01574-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/d194076cf964/sensors-19-01574-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/5255a1ddd05d/sensors-19-01574-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/aadffc2f4582/sensors-19-01574-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/a7da1f3d48d4/sensors-19-01574-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/68529a547101/sensors-19-01574-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/e8df55dfd6f1/sensors-19-01574-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/ba39931f6774/sensors-19-01574-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/9f6d6fa12cb1/sensors-19-01574-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/60368cee6c09/sensors-19-01574-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/fb2b16b0fadc/sensors-19-01574-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/96dce6fedca2/sensors-19-01574-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/a402ba31231c/sensors-19-01574-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/c5f59879abe4/sensors-19-01574-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/d194076cf964/sensors-19-01574-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/5255a1ddd05d/sensors-19-01574-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/aadffc2f4582/sensors-19-01574-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/a7da1f3d48d4/sensors-19-01574-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/68529a547101/sensors-19-01574-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/e8df55dfd6f1/sensors-19-01574-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/ba39931f6774/sensors-19-01574-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eb2e/6479749/9f6d6fa12cb1/sensors-19-01574-g013.jpg

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Quasi-distributed twist/torsion sensor.准分布式扭转/扭矩传感器。
Opt Express. 2016 Nov 14;24(23):26282-26299. doi: 10.1364/OE.24.026282.
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