Seven-core photonic crystal fiber temperature sensor

被引：0
|
作者：
Wu G.-Z. [1 ]
Lin C.-T. [1 ]
Lu J.-C. [1 ]
Ma Q.-Q. [1 ]
机构：
[1] School of Physics and Electronic Information Engineering, Zhejiang Normal University, Jinhua
来源：
Wu, Gen-Zhu (wugenzhu@zjnu.cn) | 1600年 / Chinese Academy of Sciences卷 / 29期
关键词：
Mach-Zehnder interference; Optical fiber sensing; Seven-core photonic crystal; Temperature sensor;
D O I：
10.37188/OPE.2020.0662
中图分类号：
学科分类号：
摘要：
To better understand the sensing characteristics of the seven-core photonic crystal fiber, this study adopted the method of combining theory and experiment. The finite element method was used to evaluate the temperature sensing characteristics of the seven-core photonic crystal, and the relationship between the effective refraction difference under the basic mode of the seven-core photonic crystal core and the higher order mode of the cladding and the temperature was determined. Moreover, the relationship between the wavelength of the trough and the temperature, that is, theoretical sensitivity, was calculated. And it was based on the single-mode-seven-core photonic crystal-single-mode Mach-Zehnder interference combined with the water bath method to detect the temperature. The results indicate that the theoretically calculated sensitivity is -47.14 pm/ºC, and the experimentally measured sensitivity is -48.86 pm/ºC. The seven-core photonic crystal fiber also features good linear temperature sensing characteristics. Owing to its good stability, high linearity fit, simple manufacturing process, and other characteristics, it shows potential for application in marine environmental monitoring, the biopharmaceutical industry, food testing, and other fields.
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页码：951 / 957
页数：6
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