Abstract
The paper presents a FPI sensor by splicing a photonic crystal fiber (PCF) to a well-cleaved single-mode fiber (SMF) and a multimode fiber (MMF), preparing a SMF–PCF–MMF structure, and the section of PCF was the cavity. Temperature and NaCl solution concentration responses were investigated experimentally. The temperature sensitivity is ∼12.3 pm/°C and concentration sensitivity is ∼0.01 dB/%. The proposed sensor could offer such features as low cross-sensitivity, good temperature stability, temperature and concentration linearity are both over 0.996, making it attractive for liquid concentration and temperature measurement.
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ACKNOWLEDGMENTS
This study was funded by the 111 Project (grant no. D17021), Program for Changjiang Scholars and Innovative Research Team in University (grant no. IRT_16R07), and National Natural Science Foundation of China (grant nos. 51775051 and 61801030).
Conflict of Interest: The authors declare that they have no conflict of interest.
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Kangpeng, Z., Wei, H., Wen, Z. et al. A Dual-parameter Fabry–Perot Interferometer Sensor Based on Single Mode-Photonic Crystal-Multimode Fiber Structure. Instrum Exp Tech 62, 426–431 (2019). https://doi.org/10.1134/S0020441219030266
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DOI: https://doi.org/10.1134/S0020441219030266