24 October 2017 Simultaneous measurement for strain and temperature based on the twisted-tapering fiber structure
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Proceedings Volume 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications; 104642F (2017) https://doi.org/10.1117/12.2285512
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
A novel special fiber fabrication method based on a common single mode fiber (SMF) for dual-parameters measurement has been proposed and experimentally demonstrated. The fabrication setup is based on a three dimensional electric displacement platform which can realize the function of twisting and tapering at the same time. The proposed novel structure simultaneously undergoes the aforementioned two processes. Then a twisted-tapering fiber structure is formed. There are two dominant resonant wavelengths in the spectrum. Thus, simultaneous measurement for strain and temperature can be achieved. The following result shows that the strain measurement can be achieved by intensity demodulation, with the sensitivity of -0.01565 dB/με and 0.00705 dB/με corresponding to the dip1 and dip2, respectively. Therefore, the total sensitivity of the strain is 0.0227 dB/με. Moreover, the cross impacts of the wavelength shift are - 0.772 pm/με and 0.895 pm/με. Similarly, the wavelength demodulation is selected to temperature measurement. The temperature sensitivity of 50.53pm/°C and 45.12pm/°C are obtained. The cross sensitivity of the intensity variation are 0.04058dB/°C and 0.02031 dB/°C. As a result, the dual-parameters can be described to a cross matrix of the sensitivity value. The proposed sensor has a great potential for engineering applications due to its compact structure, simple manufacture and low cost.
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Wenjun Ni, Wenjun Ni, Ping Lu, Ping Lu, Deming Liu, Deming Liu, Jiangshan Zhang, Jiangshan Zhang, } "Simultaneous measurement for strain and temperature based on the twisted-tapering fiber structure", Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 104642F (24 October 2017); doi: 10.1117/12.2285512; https://doi.org/10.1117/12.2285512

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