材料科学
毛细管作用
管(容器)
光纤传感器
光学
光纤
压力传感器
熔接
灵敏度(控制系统)
压力测量
温度测量
纤维
折射率
法布里-珀罗干涉仪
单模光纤
光电子学
复合材料
电子工程
机械工程
波长
物理
量子力学
热力学
工程类
作者
Haiqiang He,Yi Liu,Yingying Liao,Changpeng Lang,Yan Li,Shiliang Qu
出处
期刊:Optics Express
[The Optical Society]
日期:2019-08-27
卷期号:27 (18): 25777-25777
被引量:37
摘要
A simple fiber-optic sensor for simultaneous measurement of high pressure and high temperature was proposed. The sensor was simply fabricated by splicing two sections of silica capillary tubes (SCTs) with different inner diameters to the single-mode fiber. The thick core SCT functions as a Fabry-Perot (FP) micro-cavity and an anti-resonant reflecting waveguide at the same time. The two different sensing mechanisms lead to the high contrast sensitivity values of pressure and temperature (‒3.76 nm/MPa, 27.7 pm/°C and 4.24 nm/MPa, 0.82 pm/°C). We also proposed a simple and effective method to evaluate the actual sensitivities of two-parameter sensors by using linear programming, which shows that our sensor is more sensitive than others in high pressure and high temperature simultaneous detection. Besides, low cost, good mechanical property and convenient reflective probe make the sensor more competitive in actual application.
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