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A temperature-insensitive refractive index sensor based on in-line Mach–Zehnder interferometer with micro spindle structures and photonic crystal fibers
ジャーナル論文 - rm_published_papers: Scientific Journal   査読済み

A temperature-insensitive refractive index sensor based on in-line Mach–Zehnder interferometer with micro spindle structures and photonic crystal fibers

Kishi NAOTO
Optical Fiber Technology, Vol.89, ページ104039-104039
01/2025
DOI: https://doi.org/10.1016/j.yofte.2024.104039

抄録

A high-sensitivity refractive index (RI) sensor is proposed and designed, which is an in-line Mach-Zehnder interferometer (IMZI) with a photonic crystal fiber (PCF) and multilevel micro spindle structures fabricated by the arc-discharging and tapering method. To improve the sensitivity, a tapered multimode fiber (MMF) is inserted into the PCF. The performance of RI and temperature detection has been analyzed and discussed. The maximum RI sensitivity of -2958.875 nm/RIU is achieved by detecting the NaCl solution. In addition, the maximum temperature sensitivity is 6.4 pm/degree in the range of 25 degree - 65 degree, and the maximum measurement error changes caused by temperature is -0.0170 per mille/degree. It shows that the sensor is very sensitive to RI yet insensitive to temperature.

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url
https://doi.org/10.1016/j.yofte.2024.104039表示
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url
https://www.sciencedirect.com/science/article/pii/S1068520024003845?via%3Dihub表示
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