具有密封微球形反射器的微光纤法布里-珀罗干涉仪的高灵敏度温度传感性能

Highly Sensitive Temperature Sensing Performance of a Microfiber Fabry-Perot Interferometer with Sealed Micro-Spherical Reflector.

作者信息

Li Jin, Yang Juntong, Ma Jinna

机构信息

State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, Shenzhen 518172, China.

College of Information Science and Engineering, Northeastern University, Shenyang 110819, China.

出版信息

Micromachines (Basel). 2019 Nov 12;10(11):773. doi: 10.3390/mi10110773.

DOI:10.3390/mi10110773

PMID:31726706

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6915583/

Abstract

A temperature probe has been proposed by inserting a microfiber taper into a silica hollow core fiber with a microsphere end. The sealed air cavity in the microsphere and the inserted microfiber acted as the two reflectors of a Fabry-Perot interferometer, respectively. The contribution of both microfiber diameter and cavity length on the interference spectra was analyzed and discussed in detail. The temperature change was experimentally determined by monitoring the wavelength location of the special resonance dip. By filling the air cavity with poly-dimethylsiloxane (PDMS), a high temperature sensitivity of 3.90 nm/°C was experimentally demonstrated. This temperature probe with the diameter of 150 μm and length of 10 mm will be a promising candidate for exploring the miniature or implantable sensors.

摘要

通过将微光纤锥插入具有微球端的二氧化硅空心光纤中，已提出一种温度探头。微球中的密封空气腔和插入的微光纤分别充当法布里-珀罗干涉仪的两个反射器。详细分析和讨论了微光纤直径和腔长度对干涉光谱的影响。通过监测特定共振凹陷的波长位置，实验确定了温度变化。通过用聚二甲基硅氧烷（PDMS）填充空气腔，实验证明了3.90 nm/°C的高温灵敏度。这种直径为150μm、长度为10mm的温度探头将是探索微型或可植入传感器的有前途的候选者。