材料科学
光学
毛细管作用
干涉测量
光纤传感器
温度测量
光纤
流离失所(心理学)
熔接
纤维
单模光纤
渐变折射率纤维
光子晶体光纤
灵敏度(控制系统)
芯(光纤)
物理
复合材料
量子力学
工程类
电子工程
心理学
心理治疗师
作者
João A. Santos,Joerg Bierlich,Jens Kobelke,Марта Феррейра
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-07-19
卷期号:47 (15): 3708-3708
被引量:3
摘要
A fiber sensor based on a silica capillary in a balloon-like shape for simultaneous measurement of displacement and temperature is proposed and experimentally demonstrated. The sensor is fabricated by splicing a segment of a hollow-core fiber between two single-mode fibers (SMF) and by creating a balloon shape with the capillary at the top-center position. The SMF-capillary-SMF configuration excites an antiresonant (AR) guidance, and the balloon shape enhances the Mach-Zehnder interferometer (MZI). Experimental results show that, for a balloon length of 4.0 cm and a capillary length of 1.2 cm, the AR is insensitive to displacement and its sensitivity to temperature is 14.3 pm/°C, while the MZI has a sensitivity to displacement of 1.68 nm/mm in the range between 0 and 5 mm and a sensitivity to temperature of 28.6 pm/°C, twice the value of the AR. The proposed fiber sensor has only one sensing element in one configuration, which makes it simple to fabricate as well as low cost.
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