期刊
SENSORS
卷 22, 期 23, 页码 -出版社
MDPI
DOI: 10.3390/s22239028
关键词
photonic crystal fiber; surface plasmon resonance; refractive index sensor; temperature sensor; dual-parameter measurement
资金
- National Natural Science Foundation of China
- [61905091]
- [62104080]
- [62005095]
This paper presents a compact temperature-refractive index flat photonic crystal fiber sensor based on surface plasmon resonance. The sensor features high sensitivity, simple structure, good fabrication repeatability, and flexible operation. It has potential applications in medical diagnosis, chemical inspection, and other fields.
A compact temperature-refractive index (RI) flat photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) is presented in this paper. Sensing of temperature and RI takes place in the x- and y- polarization, respectively, to avoid the sensing crossover, eliminating the need for matrix calculation. Simultaneous detection of dual parameters can be implemented by monitoring the loss spectrum of core modes in two polarizations. Compared with the reported multi-function sensors, the designed PCF sensor provides higher sensitivities for both RI and temperature detection. A maximum wavelength sensitivity of -5 nm/degrees C is achieved in the temperature range of -30-40 degrees C. An excellent optimal wavelength sensitivity of 17,000 nm/RIU is accomplished in the RI range of 1.32-1.41. The best amplitude sensitivity of RI is up to 354.39 RIU-1. The resolution of RI and temperature sensing is 5.88 x 10(-6) RIU and 0.02 degrees C, respectively. The highest value of the figure of merit (FOM) is 216.74 RIU-1. In addition, the flat polishing area of the gold layer reduces the manufacturing difficulty. The proposed sensor has the characteristics of high sensitivity, simple structure, good fabrication repeatability, and flexible operation. It has potential in medical diagnosis, chemical inspection, and many other fields.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据