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A high-sensitivity optical fiber temperature sensor with tiny size and sample structure [Early Posting]

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摘要

This paper presents a new type of optical fiber probe used to detect temperature, whose structure is very simple. The optical fiber probe is filled with cholesteric liquid crystals (CLCs) whose reflected light varies with temperature. The experimental results show that the proposed sensor can achieve a temperature sensitivity of 5.64 nm/°C. The sensor has the advantages of simple structure, low cost and easy to mass manufacture. Its size is very tiny (the tapered structure, 125 μm in maximum diameter and <300 μm in length) and easy to integration and measure. Meantime, the tapered structure of the probe is also ideal for measuring small samples such as cells and microfluidic channel, which will be a promising candidate for monitoring temperature fluctuations in small spaces.

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作者单位:

    Haerbin Engineering University
    Harbin Engineering University

引用该论文

Zhang Hai,Shang Jianyu,Liu Xiujuan,Wang Feiru,Sun weimin,Liu Yongjun. A high-sensitivity optical fiber temperature sensor with tiny size and sample structure[J].Chinese Optics Letters,2020,18(10):10.