Abstract
A Mach-Zehnder interferometer (MZI) for high temperature (1000 °C) sensing based on few mode fiber (FMF) was proposed and experimentally demonstrated. The sensor was fabricated by fusing a section of FMF between two single-mode fibers (SMFs). The structure was proven to be an excellent high temperature sensor with good stability, repeatability, and high temperature sensitivity (48.2 pm/C) after annealing process at a high temperature lasting some hours, and a wide working temperature range (from room temperature to 1000 C). In addition, the simple fabrication process and the low cost offered a great potential for sensing in high temperature environments.
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Acknowledgment
This work was funded by the National Natural Science Foundation of China (NSFC) (Grant Nos. 41266001, 61665007, and 61865013); National Key Research and Development Project from the Ministry of Science and Technology (Grant No. 2018YFE0115700); Science and Technology Project of Jiangxi Education Department (Grant No. GJJ180518); Nanchang Hangkong University graduate student innovation special fund project (Grant No. YC2019053).
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Liu, J., Luo, C., Yang, H. et al. Mach-Zehnder Interferometer for High Temperature (1000 °C) Sensing Based on a Few-Mode Fiber. Photonic Sens 11, 341–349 (2021). https://doi.org/10.1007/s13320-020-0596-z
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DOI: https://doi.org/10.1007/s13320-020-0596-z