材料科学
压力传感器
熔接
聚二甲基硅氧烷
灵敏度(控制系统)
光纤
芯(光纤)
光纤传感器
光电子学
光学
温度测量
纤维
复合材料
电子工程
量子力学
热力学
物理
工程类
作者
Jiawei Gao,Chao Jiang,LI Li,Longfeng Deng,Chuanju Hu,Hong Li,Tingshui Cao,Simei Sun
标识
DOI:10.1016/j.yofte.2023.103634
摘要
We use hollow core fiber (HCF) and single mode fiber (SMF) fusion splicing to form a sensor with a “SMF-HCF-SMF” structure. To improve the sensitivity of the sensor, the HCF is tapered and stretched to a waist diameter of 10 μm. Then, in order to further improve the sensitivity of the sensor to temperature and pressure, as well as the mechanical strength of the sensor, we coated a layer of polydimethylsiloxane (PDMS) thin film on the surface of the tapered HCF. When light propagates in the sensor, an anti-resonant reflection optical waveguide (ARROW) mechanism is formed. Due to the excellent thermal sensitivity and elasticity of PDMS, the transmission spectrum of the sensor will significantly drift due to changes in environmental temperature and gas pressure, achieving temperature and pressure measurement. The experimental results show that the maximum temperature and gas pressure sensitivity of the sensor reach −3.2321 nm/℃ and −22.80 nm/MPa, respectively. In addition, the sensor also has good repeatability and stability, as well as short response time. It has certain application prospects in the field of high sensitivity temperature and gas pressure sensing measurement.
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