双锥锥光纤中基于光栅的法布里-珀罗结构的传感特性

2019 IEEE 4th Optoelectronics Global Conference (OGC) Pub Date : 2019-09-01 DOI:10.1109/OGC.2019.8925018

Aayush Madan, V. Paulose, Wonkeun Chang, P. Shum, J. Hao

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引用次数: 2

摘要

本文研究了丙烯酸酯包覆双锥锥形光纤中基于光纤布拉格光栅(FBG)的Fabry-Perot (FP)结构的传感特性。采用火焰涂刷技术将光纤直径逐渐减小到$\mathbf{70}\ \mu \mathbf{m}$，然后使用红外飞秒激光脉冲照射对光纤芯内的FP结构进行逐点写入。传感结构由两个相同的光栅组成，由一个小间隙分开。研究了应变特性(可达$3440\ \mu\varepsilon$)和温度特性(可达225℃)。对应变和温度的传感灵敏度分别为$2.32\ \mathrm{pm}/\mu\varepsilon$和8.86 pm/°C。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Sensing Characteristics of a Grating-Based Fabry-Perot Structure in a Biconical Tapered Fiber

In this article, we present the sensing charac-teristics of a fiber Bragg grating (FBG) based Fabry-Perot (FP) structure in an acrylate coated biconical tapered fiber. The fiber-diameter was tapered down to $\mathbf{70}\ \mu \mathbf{m}$ using flame brushing technique followed by point-by-point writing of the FP structure within the fiber core using infrared femtosecond laser pulse irradiation. The sensing structure consists of two identical gratings separated by a small gap. The strain characteristics, ranging up to $3440\ \mu\varepsilon$, and the temperature characteristics, ranging up to 225 °C, have been investigated. The sensing sensitivities for strain and temperature were found out to be $2.32\ \mathrm{pm}/\mu\varepsilon$ and 8.86 pm/°C, respectively.

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2019 IEEE 4th Optoelectronics Global Conference (OGC)

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