摘要
In this Letter, an alternative solution is proposed and demonstrated for simultaneous measurement of axial strain and temperature. This sensor consists of two twisted points on a commercial single mode fiber introduced by flame-heated and rotation treatment. The fabrication process modifies the geometrical configuration and refractive index of the fiber. Different cladding modes are excited at the first twisted point, and part of them are coupled back to the fiber core at the second twisted point. Experimental results show distinct sensitivities of 34.9 pm/με with 49.23 pm/℃ and -36.19 pm/με with 62.99 pm/℃ for the two selected destructive interference wavelengths.
In this Letter, an alternative solution is proposed and demonstrated for simultaneous measurement of axial strain and temperature. This sensor consists of two twisted points on a commercial single mode fiber introduced by flame-heated and rotation treatment. The fabrication process modifies the geometrical configuration and refractive index of the fiber. Different cladding modes are excited at the first twisted point, and part of them are coupled back to the fiber core at the second twisted point. Experimental results show distinct sensitivities of 34.9 pm/με with 49.23 pm/℃ and -36.19 pm/με with 62.99 pm/℃ for the two selected destructive interference wavelengths.
作者
Xinyue Jiang
Ping Lu
Yuan Sun
Hao Liao
Deming Liu
Ziangshan Zhang
Hui Liao
姜昕越;鲁平;孙远;廖浩;刘德明;张江山;廖辉(School of Optical and Electronic Information, National Engineering Laboratory for Next Generation Internet Access System, Huazhong University of Science and Technology;Department of Electronics and Information Engineering, Huazhong University of Science and Technology;Enviromental Protection Science and Technology Co., Ltd.)
基金
supported by the National Natural Science Foundation of China(Nos.61775070 and 61275083)
the Fundamental Research Funds for the Central Universities(No.2017KFYXJJ032)
