Sapphire-Derived Fiber Bragg Gratings for High Temperature Sensing

doi:10.3390/cryst11080946

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	Sapphire-Derived Fiber Bragg Gratings for High Temperature Sensing
	Q. Guo; Z. X. Jia; X. P. Pan; S. R. Liu; Z. N. Tian; Z. M. Zheng; C. Chen; G. S. Qin and Y. S. Yu
	2021
发表期刊	Crystals
卷号	11 期号:8 页码:9
摘要	In this paper, a sapphire-derived fiber (SDF) with a core diameter of 10 mu m and a cladding diameter of 125 mu m is fabricated by the melt-in-tube method, and fiber Bragg gratings (FBGs) with reflectivity over 80% are prepared by the femtosecond laser point-by-point direct writing method. By analyzing the refractive index distribution and reflection spectral characteristics of the SDF, it can be seen that the SDF is a graded refractive index few-mode fiber. In order to study the element composition of the SDF core, the end-face element distribution of the SDF is analyzed, which indicates that element diffusion occurred between the core and the cladding materials. The temperature and stress of the SDF gratings are measured and the highest temperature is tested to 1000 degrees C. The temperature and strain sensitivities are 15.64 pm/degrees C and 1.33 pm/mu epsilon, respectively, which are higher than the temperature sensitivity of the quartz single-mode fiber. As a kind of special fiber, the SDF expands the application range of sapphire fiber, and has important applications in the fields of high-temperature sensing and high-power lasers.
DOI	10.3390/cryst11080946
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收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65610
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Q. Guo,Z. X. Jia,X. P. Pan,et al. Sapphire-Derived Fiber Bragg Gratings for High Temperature Sensing[J]. Crystals,2021,11(8):9.
APA	Q. Guo.,Z. X. Jia.,X. P. Pan.,S. R. Liu.,Z. N. Tian.,...&G. S. Qin and Y. S. Yu.(2021).Sapphire-Derived Fiber Bragg Gratings for High Temperature Sensing.Crystals,11(8),9.
MLA	Q. Guo,et al."Sapphire-Derived Fiber Bragg Gratings for High Temperature Sensing".Crystals 11.8(2021):9.

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