曲率
芯(光纤)
材料科学
参数统计
纤维
温度测量
对偶(语法数字)
复合材料
几何学
物理
数学
艺术
统计
文学类
量子力学
作者
Xinghu Fu,Jiaqi Li,Sihang Lv,Huanting Wang,Wa Jin,Guangwei Fu,Weihong Bi,Yutao Liu,Sumei Jia
出处
期刊:IEEE Sensors Journal
[Institute of Electrical and Electronics Engineers]
日期:2024-06-01
卷期号:24 (11): 17718-17724
标识
DOI:10.1109/jsen.2024.3386563
摘要
A seven-core fiber (SCF) dual parametric sensor based on a taper-biconcave structure is proposed. The end faces of SCF and single-mode fiber (SMF) are discharged to form a spherical structure, and the spherical structures of the two fibers are fused to form two concave regions. The SCF is tapered using flame melting method to excite interference between the fundamental and higher-order modes. When the external environment is changed, the effective refractive indices of each core mode and cladding mode of the SCF are changed to different degrees, which causes changes in the interference spectrum of the sensor. The experimental results show that the temperature and curvature sensitivities of the sensor are 114.84 pm/°C and 13.60 nm/m -1 respectively, and the temperature and curvature resolutions can reach 1.7666°C and 0.0157m -1 , and the maximum crosstalk coefficient of the temperature to curvature is 3.02m -1 /RIU, which effectively solves the cross-sensitivity problem. This sensor has simple fabrication and high sensitivity, and can be used for temperature and curvature detection in industrial production and precision measurement environments.
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