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26 March 2019 Ultrasensitive measurement of temperature using an isopropanol-sealed optical microfiber coupler
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Abstract
A highly sensitive temperature sensor based on an isopropanol-sealed optical microfiber coupler (OMC) is proposed and investigated. Isopropanol is a kind of material with high thermo-optic coefficient. By encapsulating the OMC into isopropanol environment, the OMC can be turned to a highly sensitive temperature sensor. Using this approach, we experimentally demonstrate a temperature sensor. By optimizing the waist diameter of the OMC, an ultrahigh temperature sensitivity of -5.89 nm/° has been achieved at the waist diameter of 2.2 μm in the range of 30-40°.
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Yundong Zhang, Li Zhao, Yunhao Chen, and Jinfang Wang "Ultrasensitive measurement of temperature using an isopropanol-sealed optical microfiber coupler", Proc. SPIE 10934, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology, 1093407 (26 March 2019); https://doi.org/10.1117/12.2515410
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